diff --git a/mod/forum/report/summary/classes/event/report_downloaded.php b/mod/forum/report/summary/classes/event/report_downloaded.php
index cc9533686c8..9374eb5309d 100644
--- a/mod/forum/report/summary/classes/event/report_downloaded.php
+++ b/mod/forum/report/summary/classes/event/report_downloaded.php
@@ -58,13 +58,16 @@ class report_downloaded extends \core\event\base {
      * @return string
      */
     public function get_description() {
-        if ($this->other['hasviewall']) {
-            return "The user with id '{$this->userid}' downloaded the summary report for the forum with " .
-                    "course module id '{$this->contextinstanceid}'.";
+        $whose = $this->other['hasviewall'] ? 'the' : 'their own';
+        $description = "The user with id '{$this->userid}' downloaded {$whose} summary report for ";
+
+        if ($this->other['forumid']) {
+            $description .= "the forum with course module id '{$this->contextinstanceid}'.";
         } else {
-            return "The user with id '{$this->userid}' downloaded their own summary report for the forum with " .
-                    "course module id '{$this->contextinstanceid}'.";
+            $description .= "the course with id '{$this->contextinstanceid}'.";
         }
+
+        return $description;
     }
 
     /**
@@ -72,8 +75,13 @@ class report_downloaded extends \core\event\base {
      * @return \moodle_url
      */
     public function get_url() {
-        return new \moodle_url('/mod/forum/report/summary/index.php',
-                ['courseid' => $this->courseid, 'forumid' => $this->other['forumid']]);
+        $params = ['courseid' => $this->courseid];
+
+        if (!empty($this->other['forumid'])) {
+            $params['forumid'] = $this->other['forumid'];
+        }
+
+        return new \moodle_url('/mod/forum/report/summary/index.php', $params);
     }
 
     /**
diff --git a/mod/forum/report/summary/classes/event/report_viewed.php b/mod/forum/report/summary/classes/event/report_viewed.php
index 5f313d18a5b..991dd326437 100644
--- a/mod/forum/report/summary/classes/event/report_viewed.php
+++ b/mod/forum/report/summary/classes/event/report_viewed.php
@@ -58,14 +58,16 @@ class report_viewed extends \core\event\base {
      * @return string
      */
     public function get_description() {
-        if ($this->other['hasviewall']) {
-            return "The user with id '{$this->userid}' viewed the summary report for the forum with " .
-                    "course module id '{$this->contextinstanceid}'.";
+        $whose = $this->other['hasviewall'] ? 'the' : 'their own';
+        $description = "The user with id '{$this->userid}' viewed {$whose} summary report for ";
 
+        if ($this->other['forumid']) {
+            $description .= "the forum with course module id '{$this->contextinstanceid}'.";
         } else {
-            return "The user with id '{$this->userid}' viewed their own summary report for the forum with " .
-                    "course module id '{$this->contextinstanceid}'.";
+            $description .= "the course with id '{$this->contextinstanceid}'.";
         }
+
+        return $description;
     }
 
     /**
@@ -74,8 +76,13 @@ class report_viewed extends \core\event\base {
      * @return \moodle_url
      */
     public function get_url() {
-        return new \moodle_url('/mod/forum/report/summary/index.php',
-                ['courseid' => $this->courseid, 'forumid' => $this->other['forumid']]);
+        $params = ['courseid' => $this->courseid];
+
+        if (!empty($this->other['forumid'])) {
+            $params['forumid'] = $this->other['forumid'];
+        }
+
+        return new \moodle_url('/mod/forum/report/summary/index.php', $params);
     }
 
     /**
diff --git a/mod/forum/report/summary/classes/output/filters.php b/mod/forum/report/summary/classes/output/filters.php
index 4fe3398c92e..54a6eea837c 100644
--- a/mod/forum/report/summary/classes/output/filters.php
+++ b/mod/forum/report/summary/classes/output/filters.php
@@ -42,11 +42,19 @@ defined('MOODLE_INTERNAL') || die();
 class filters implements renderable, templatable {
 
     /**
-     * Course module the report is being run within.
+     * Course modules the report relates to.
+     * Array of stdClass objects
      *
-     * @var stdClass $cm
+     * @var array $cms
      */
-    protected $cm;
+    protected $cms;
+
+    /**
+     * Course ID where the report is being generated.
+     *
+     * @var int $courseid
+     */
+    protected $courseid;
 
     /**
      * Moodle URL used as the form action on the generate button.
@@ -98,13 +106,15 @@ class filters implements renderable, templatable {
     /**
      * Builds renderable filter data.
      *
-     * @param stdClass $cm The course module object.
+     * @param stdClass $course The course object.
+     * @param array $cms Array of course module objects.
      * @param moodle_url $actionurl The form action URL.
      * @param array $filterdata (optional) Associative array of data that has been set on available filters, if any,
-     *                                      in the format filtertype => [values]
+     *                                     in the format filtertype => [values]
      */
-    public function __construct(stdClass $cm, moodle_url $actionurl, array $filterdata = []) {
-        $this->cm = $cm;
+    public function __construct(stdClass $course, array $cms, moodle_url $actionurl, array $filterdata = []) {
+        $this->cms = $cms;
+        $this->courseid = $course->id;
         $this->actionurl = $actionurl;
 
         // Prepare groups filter data.
@@ -126,26 +136,54 @@ class filters implements renderable, templatable {
     protected function prepare_groups_data(array $groupsdata): void {
         global $DB, $USER;
 
-        $groupmode = groups_get_activity_groupmode($this->cm);
-        $context = \context_module::instance($this->cm->id);
-        $aag = has_capability('moodle/site:accessallgroups', $context);
         $groupsavailable = [];
+        $allowedgroupsobj = [];
+
+        $usergroups = groups_get_all_groups($this->courseid, $USER->id);
+        $coursegroups = groups_get_all_groups($this->courseid);
+        $forumids = [];
+        $allgroups = false;
+        $hasgroups = false;
+
+        // Check if any forum gives the user access to all groups and no groups.
+        foreach ($this->cms as $cm) {
+            $forumids[] = $cm->instance;
+
+            // Only need to check for all groups access if not confirmed by a previous check.
+            if (!$allgroups) {
+                $groupmode = groups_get_activity_groupmode($cm);
+
+                // If no groups mode enabled on the forum, nothing to prepare.
+                if (!in_array($groupmode, [VISIBLEGROUPS, SEPARATEGROUPS])) {
+                    continue;
+                }
+
+                $hasgroups = true;
+
+                // Fetch for the current cm's forum.
+                $context = \context_module::instance($cm->id);
+                $aag = has_capability('moodle/site:accessallgroups', $context);
+
+                if ($groupmode == VISIBLEGROUPS || $aag) {
+                    $allgroups = true;
+                }
+            }
+        }
 
         // If no groups mode enabled, nothing to prepare.
-        if (!in_array($groupmode, [VISIBLEGROUPS, SEPARATEGROUPS])) {
+        if (!$hasgroups) {
             return;
         }
 
-        if ($groupmode == VISIBLEGROUPS || $aag) {
-            // Any groups, and no groups.
-            $allowedgroupsobj = groups_get_all_groups($this->cm->course, 0, $this->cm->groupingid);
+        // Any groups, and no groups.
+        if ($allgroups) {
             $nogroups = new stdClass();
             $nogroups->id = -1;
             $nogroups->name = get_string('groupsnone');
-            $allowedgroupsobj[] = $nogroups;
+
+            $allowedgroupsobj = $coursegroups + [$nogroups];
         } else {
-            // Only assigned groups.
-            $allowedgroupsobj = groups_get_all_groups($this->cm->course, $USER->id, $this->cm->groupingid);
+            $allowedgroupsobj = $usergroups;
         }
 
         foreach ($allowedgroupsobj as $group) {
@@ -159,17 +197,16 @@ class filters implements renderable, templatable {
         $this->groupsavailable = $groupsavailable;
         $this->groupsselected = $groupsselected;
 
-        // If export links will require discussion filtering, find and set the discussion IDs.
         $groupsselectedcount = count($groupsselected);
         if ($groupsselectedcount > 0 && $groupsselectedcount < count($groupsavailable)) {
+            list($forumidin, $forumidparams) = $DB->get_in_or_equal($forumids, SQL_PARAMS_NAMED);
             list($groupidin, $groupidparams) = $DB->get_in_or_equal($groupsselected, SQL_PARAMS_NAMED);
-            $dwhere = "course = :courseid AND forum = :forumid AND groupid {$groupidin}";
-            $dparams = [
-                'courseid' => $this->cm->course,
-                'forumid' => $this->cm->instance,
-            ];
-            $dparams += $groupidparams;
-            $discussionids = $DB->get_fieldset_select('forum_discussions', 'DISTINCT id', $dwhere, $dparams);
+
+            $discussionswhere = "course = :courseid AND forum {$forumidin} AND groupid {$groupidin}";
+            $discussionsparams = ['courseid' => $this->courseid];
+            $discussionsparams += $forumidparams + $groupidparams;
+
+            $discussionids = $DB->get_fieldset_select('forum_discussions', 'DISTINCT id', $discussionswhere, $discussionsparams);
 
             foreach ($discussionids as $discussionid) {
                 $this->discussionids[] = ['discid' => $discussionid];
diff --git a/mod/forum/report/summary/classes/summary_table.php b/mod/forum/report/summary/classes/summary_table.php
index 7cc4ba5522a..2e5e7a68a88 100644
--- a/mod/forum/report/summary/classes/summary_table.php
+++ b/mod/forum/report/summary/classes/summary_table.php
@@ -62,8 +62,17 @@ class summary_table extends table_sql {
     /** @var array The values available for pagination size per page. */
     protected $perpageoptions = [50, 100, 200];
 
-    /** @var \stdClass The course module object of the forum being reported on. */
-    protected $cm;
+    /** @var int The course ID containing the forum(s) being reported on. */
+    protected $courseid;
+
+    /** @var bool True if reporting on all forums in course user has access to, false if reporting on a single forum */
+    protected $iscoursereport = false;
+
+    /** @var bool True if user has access to all forums in the course (and is running course report), otherwise false. */
+    protected $accessallforums = false;
+
+    /** @var \stdClass The course module object(s) of the forum(s) being reported on. */
+    protected $cms = [];
 
     /**
      * @var int The user ID if only one user's summary will be generated.
@@ -77,9 +86,14 @@ class summary_table extends table_sql {
     protected $logreader = null;
 
     /**
-     * @var \context|null
+     * @var array of \context objects for the forums included in the report.
      */
-    protected $context = null;
+    protected $forumcontexts = [];
+
+    /**
+     * @var context_course|context_module The context where the report is being run (either a specific forum or the course).
+     */
+    protected $userfieldscontext = null;
 
     /** @var bool Whether the user has the capability/capabilities to perform bulk operations. */
     protected $allowbulkoperations = false;
@@ -108,25 +122,24 @@ class summary_table extends table_sql {
      * @param bool $canseeprivatereplies Whether the user can see all private replies or not.
      * @param int $perpage The number of rows to display per page.
      * @param bool $canexport Is the user allowed to export records?
+     * @param bool $iscoursereport Whether the user is running a course level report
+     * @param bool $accessallforums If user is running a course level report, do they have access to all forums in the course?
      */
     public function __construct(int $courseid, array $filters, bool $allowbulkoperations,
-            bool $canseeprivatereplies, int $perpage, bool $canexport) {
-        global $USER, $OUTPUT;
+            bool $canseeprivatereplies, int $perpage, bool $canexport, bool $iscoursereport, bool $accessallforums) {
+        global $OUTPUT;
 
-        $forumid = $filters['forums'][0];
+        $uniqueid = $courseid . ($iscoursereport ? '' : '_' . $filters['forums'][0]);
+        parent::__construct("summaryreport_{$uniqueid}");
 
-        parent::__construct("summaryreport_{$courseid}_{$forumid}");
-
-        $this->cm = get_coursemodule_from_instance('forum', $forumid, $courseid);
-        $this->context = \context_module::instance($this->cm->id);
+        $this->courseid = $courseid;
+        $this->iscoursereport = $iscoursereport;
+        $this->accessallforums = $accessallforums;
         $this->allowbulkoperations = $allowbulkoperations;
         $this->canseeprivatereplies = $canseeprivatereplies;
         $this->perpage = $perpage;
 
-        // Only show their own summary unless they have permission to view all.
-        if (!has_capability('forumreport/summary:viewall', $this->context)) {
-            $this->userid = $USER->id;
-        }
+        $this->set_forum_properties($filters['forums']);
 
         $columnheaders = [];
 
@@ -180,6 +193,37 @@ class summary_table extends table_sql {
         $this->define_base_sql();
     }
 
+    /**
+     * Sets properties that are determined by forum filter values.
+     *
+     * @param array $forumids The forum IDs passed in by the filter.
+     * @return void
+     */
+    protected function set_forum_properties(array $forumids): void {
+        global $USER;
+
+        // Course context if reporting on all forums in the course the user has access to.
+        if ($this->iscoursereport) {
+            $this->userfieldscontext = \context_course::instance($this->courseid);
+        }
+
+        foreach ($forumids as $forumid) {
+            $cm = get_coursemodule_from_instance('forum', $forumid, $this->courseid);
+            $this->cms[] = $cm;
+            $this->forumcontexts[$cm->id] = \context_module::instance($cm->id);
+
+            // Set forum context if not reporting on course.
+            if (!isset($this->userfieldscontext)) {
+                $this->userfieldscontext = $this->forumcontexts[$cm->id];
+            }
+
+            // Only show own summary unless they have permission to view all in every forum being reported.
+            if (empty($this->userid) && !has_capability('forumreport/summary:viewall', $this->forumcontexts[$cm->id])) {
+                $this->userid = $USER->id;
+            }
+        }
+    }
+
     /**
      * Provides the string name of each filter type, to be used by errors.
      * Note: This does not use language strings as the value is injected into error strings.
@@ -230,7 +274,7 @@ class summary_table extends table_sql {
         }
 
         global $OUTPUT;
-        return $OUTPUT->user_picture($data, array('size' => 35, 'courseid' => $this->cm->course, 'includefullname' => true));
+        return $OUTPUT->user_picture($data, array('courseid' => $this->courseid, 'includefullname' => true));
     }
 
     /**
@@ -302,7 +346,7 @@ class summary_table extends table_sql {
         }
 
         $params = [
-            'id' => $this->cm->instance, // Forum id.
+            'id' => $this->cms[0]->instance, // Forum id.
             'userids[]' => $data->userid, // User id.
         ];
 
@@ -381,14 +425,15 @@ class summary_table extends table_sql {
 
         switch($filtertype) {
             case self::FILTER_FORUM:
-                // Requires exactly one forum ID.
-                if (count($values) != 1) {
+                // Requires at least one forum ID.
+                if (empty($values)) {
                     $paramcounterror = true;
                 } else {
                     // No select fields required - displayed in title.
                     // No extra joins required, forum is already joined.
-                    $this->sql->filterwhere .= ' AND f.id = :forumid';
-                    $this->sql->params['forumid'] = $values[0];
+                    list($forumidin, $forumidparams) = $DB->get_in_or_equal($values, SQL_PARAMS_NAMED);
+                    $this->sql->filterwhere .= " AND f.id {$forumidin}";
+                    $this->sql->params += $forumidparams;
                 }
 
                 break;
@@ -498,13 +543,12 @@ class summary_table extends table_sql {
     protected function define_base_sql(): void {
         global $USER;
 
-        $userfields = get_extra_user_fields($this->context);
+        $userfields = get_extra_user_fields($this->userfieldscontext);
         $userfieldssql = \user_picture::fields('u', $userfields);
 
         // Define base SQL query format.
         $this->sql->basefields = ' ue.userid AS userid,
                                    e.courseid AS courseid,
-                                   f.id as forumid,
                                    SUM(CASE WHEN p.parent = 0 THEN 1 ELSE 0 END) AS postcount,
                                    SUM(CASE WHEN p.parent != 0 THEN 1 ELSE 0 END) AS replycount,
                                    ' . $userfieldssql . ',
@@ -543,10 +587,10 @@ class summary_table extends table_sql {
 
         $this->sql->basewhere = 'e.courseid = :courseid';
 
-        $this->sql->basegroupby = 'ue.userid, e.courseid, f.id, u.id, ' . $userfieldssql;
+        $this->sql->basegroupby = 'ue.userid, e.courseid, u.id, ' . $userfieldssql;
 
         if ($this->logreader) {
-            $this->fill_log_summary_temp_table($this->context->id);
+            $this->fill_log_summary_temp_table();
 
             $this->sql->basefields .= ', CASE WHEN tmp.viewcount IS NOT NULL THEN tmp.viewcount ELSE 0 END AS viewcount';
             $this->sql->basefromjoins .= ' LEFT JOIN {' . self::LOG_SUMMARY_TEMP_TABLE . '} tmp ON tmp.userid = u.id ';
@@ -561,7 +605,7 @@ class summary_table extends table_sql {
 
         $this->sql->params += [
             'component' => 'mod_forum',
-            'courseid' => $this->cm->course,
+            'courseid' => $this->courseid,
         ] + $privaterepliesparams;
 
         // Handle if a user is limited to viewing their own summary.
@@ -642,8 +686,10 @@ class summary_table extends table_sql {
      * @return void.
      */
     protected function apply_filters(array $filters): void {
-        // Apply the forums filter.
-        $this->add_filter(self::FILTER_FORUM, $filters['forums']);
+        // Apply the forums filter if not reporting on every forum in a course.
+        if (!$this->accessallforums) {
+            $this->add_filter(self::FILTER_FORUM, $filters['forums']);
+        }
 
         // Apply groups filter.
         $this->add_filter(self::FILTER_GROUPS, $filters['groups']);
@@ -719,10 +765,9 @@ class summary_table extends table_sql {
     /**
      * Fills the log summary temp table.
      *
-     * @param int $contextid
      * @return null
      */
-    protected function fill_log_summary_temp_table(int $contextid) {
+    protected function fill_log_summary_temp_table() {
         global $DB;
 
         $this->create_log_summary_temp_table();
@@ -740,11 +785,19 @@ class summary_table extends table_sql {
         $datewhere = $this->sql->filterbase['dateslog'] ?? '';
         $dateparams = $this->sql->filterbase['dateslogparams'] ?? [];
 
-        $params = ['contextid' => $contextid] + $dateparams;
+        $contextids = [];
+
+        foreach ($this->forumcontexts as $forumcontext) {
+            $contextids[] = $forumcontext->id;
+        }
+
+        list($contextidin, $contextidparams) = $DB->get_in_or_equal($contextids, SQL_PARAMS_NAMED);
+
+        $params = $contextidparams + $dateparams;
         $sql = "INSERT INTO {" . self::LOG_SUMMARY_TEMP_TABLE . "} (userid, viewcount)
                      SELECT userid, COUNT(*) AS viewcount
                        FROM {" . $logtable . "}
-                      WHERE contextid = :contextid
+                      WHERE contextid {$contextidin}
                             $datewhere
                             $nonanonymous
                    GROUP BY userid";
@@ -797,42 +850,64 @@ class summary_table extends table_sql {
     protected function get_filter_groups(array $groups): array {
         global $USER;
 
-        $groupmode = groups_get_activity_groupmode($this->cm);
-        $aag = has_capability('moodle/site:accessallgroups', $this->context);
+        $usergroups = groups_get_all_groups($this->courseid, $USER->id);
+        $coursegroupsobj = groups_get_all_groups($this->courseid);
+        $allgroups = false;
+        $allowedgroupsobj = [];
         $allowedgroups = [];
         $filtergroups = [];
 
-        // Filtering only valid if a forum groups mode is enabled.
-        if (in_array($groupmode, [VISIBLEGROUPS, SEPARATEGROUPS])) {
-            $allgroupsobj = groups_get_all_groups($this->cm->course, 0, $this->cm->groupingid);
-            $allgroups = [];
+        foreach ($this->cms as $cm) {
+            // Only need to check for all groups access if not confirmed by a previous check.
+            if (!$allgroups) {
+                $groupmode = groups_get_activity_groupmode($cm);
 
-            foreach ($allgroupsobj as $group) {
-                $allgroups[] = $group->id;
+                // If no groups mode enabled on the forum, nothing to prepare.
+                if (!in_array($groupmode, [VISIBLEGROUPS, SEPARATEGROUPS])) {
+                    continue;
+                }
+
+                $aag = has_capability('moodle/site:accessallgroups', $this->forumcontexts[$cm->id]);
+
+                if ($groupmode == VISIBLEGROUPS || $aag) {
+                    $allgroups = true;
+
+                    // All groups in course fetched, no need to continue checking for others.
+                    break;
+                }
             }
+        }
 
-            if ($groupmode == VISIBLEGROUPS || $aag) {
-                $nogroups = new \stdClass();
-                $nogroups->id = -1;
-                $nogroups->name = get_string('groupsnone');
+        if ($allgroups) {
+            $nogroups = new \stdClass();
+            $nogroups->id = -1;
+            $nogroups->name = get_string('groupsnone');
 
-                // Any groups and no groups.
-                $allowedgroupsobj = $allgroupsobj + [$nogroups];
-            } else {
-                // Only assigned groups.
-                $allowedgroupsobj = groups_get_all_groups($this->cm->course, $USER->id, $this->cm->groupingid);
-            }
+            // Any groups and no groups.
+            $allowedgroupsobj = $coursegroupsobj + [$nogroups];
+        } else {
+            $allowedgroupsobj = $usergroups;
+        }
 
-            foreach ($allowedgroupsobj as $group) {
-                $allowedgroups[] = $group->id;
-            }
+        foreach ($allowedgroupsobj as $group) {
+            $allowedgroups[] = $group->id;
+        }
 
-            // If not all groups in course are selected, filter by allowed groups submitted.
-            if (!empty($groups) && !empty(array_diff($allowedgroups, $groups))) {
+        // If not all groups in course are selected, filter by allowed groups submitted.
+        if (!empty($groups)) {
+            if (!empty(array_diff($allowedgroups, $groups))) {
                 $filtergroups = array_intersect($groups, $allowedgroups);
-            } else if (!empty(array_diff($allgroups, $allowedgroups))) {
+            } else {
+                $coursegroups = [];
+
+                foreach ($coursegroupsobj as $group) {
+                    $coursegroups[] = $group->id;
+                }
+
                 // If user's 'all groups' is a subset of the course groups, filter by all groups available to them.
-                $filtergroups = $allowedgroups;
+                if (!empty(array_diff($coursegroups, $allowedgroups))) {
+                    $filtergroups = $allowedgroups;
+                }
             }
         }
 
@@ -863,13 +938,21 @@ class summary_table extends table_sql {
         global $DB;
 
         if (is_null($this->showwordcharcounts)) {
+            $forumids = [];
+
+            foreach ($this->cms as $cm) {
+                $forumids[] = $cm->instance;
+            }
+
+            list($forumidin, $forumidparams) = $DB->get_in_or_equal($forumids, SQL_PARAMS_NAMED);
+
             // This should be really fast.
             $sql = "SELECT 'x'
                       FROM {forum_posts} fp
                       JOIN {forum_discussions} fd ON fd.id = fp.discussion
-                     WHERE fd.forum = :forumid AND (fp.wordcount IS NULL OR fp.charcount IS NULL)";
+                     WHERE fd.forum {$forumidin} AND (fp.wordcount IS NULL OR fp.charcount IS NULL)";
 
-            if ($DB->record_exists_sql($sql, ['forumid' => $this->cm->instance])) {
+            if ($DB->record_exists_sql($sql, $forumidparams)) {
                 $this->showwordcharcounts = false;
             } else {
                 $this->showwordcharcounts = true;
diff --git a/mod/forum/report/summary/index.php b/mod/forum/report/summary/index.php
index 274adcbe83d..54ec58b3ee9 100644
--- a/mod/forum/report/summary/index.php
+++ b/mod/forum/report/summary/index.php
@@ -29,68 +29,134 @@ if (isguestuser()) {
 }
 
 $courseid = required_param('courseid', PARAM_INT);
-$forumid = required_param('forumid', PARAM_INT);
+$forumid = optional_param('forumid', 0, PARAM_INT);
 $perpage = optional_param('perpage', \forumreport_summary\summary_table::DEFAULT_PER_PAGE, PARAM_INT);
+$download = optional_param('download', '', PARAM_ALPHA);
 $filters = [];
+$pageurlparams = [
+    'courseid' => $courseid,
+    'perpage' => $perpage,
+];
 
 // Establish filter values.
-$filters['forums'] = [$forumid];
 $filters['groups'] = optional_param_array('filtergroups', [], PARAM_INT);
 $filters['datefrom'] = optional_param_array('datefrom', ['enabled' => 0], PARAM_INT);
 $filters['dateto'] = optional_param_array('dateto', ['enabled' => 0], PARAM_INT);
 
-$download = optional_param('download', '', PARAM_ALPHA);
-
-$cm = null;
 $modinfo = get_fast_modinfo($courseid);
+$course = $modinfo->get_course();
+$courseforums = $modinfo->instances['forum'];
+$cms = [];
 
-if (!isset($modinfo->instances['forum'][$forumid])) {
-    throw new \moodle_exception("A valid forum ID is required to generate a summary report.");
+// Determine which forums the user has access to in the course.
+$accessallforums = false;
+$allforumidsincourse = array_keys($courseforums);
+$forumsvisibletouser = [];
+$forumselectoptions = [0 => get_string('forumselectcourseoption', 'forumreport_summary')];
+
+foreach ($courseforums as $courseforumid => $courseforum) {
+    if ($courseforum->uservisible) {
+        $forumsvisibletouser[$courseforumid] = $courseforum;
+        $forumselectoptions[$courseforumid] = $courseforum->name;
+    }
 }
 
-$foruminfo = $modinfo->instances['forum'][$forumid];
-$forumname = $foruminfo->name;
-$cm = $foruminfo->get_course_module_record();
+if ($forumid) {
+    if (!isset($forumsvisibletouser[$forumid])) {
+        throw new \moodle_exception('A valid forum ID is required to generate a summary report.');
+    }
 
-require_login($courseid, false, $cm);
-$context = \context_module::instance($cm->id);
+    $filters['forums'] = [$forumid];
+    $title = $forumsvisibletouser[$forumid]->name;
+    $forumcm = $forumsvisibletouser[$forumid];
+    $cms[] = $forumcm;
 
-// This capability is required to view any version of the report.
-if (!has_capability("forumreport/summary:view", $context)) {
-    $redirecturl = new moodle_url("/mod/forum/view.php");
-    $redirecturl->param('id', $forumid);
+    require_login($courseid, false, $forumcm);
+    $context = $forumcm->context;
+    $canexport = !$download && has_capability('mod/forum:exportforum', $context);
+    $redirecturl = new moodle_url('/mod/forum/view.php', ['id' => $forumid]);
+    $numforums = 1;
+    $pageurlparams['forumid'] = $forumid;
+    $iscoursereport = false;
+} else {
+    // Course level report.
+    require_login($courseid, false);
+
+    $filters['forums'] = array_keys($forumsvisibletouser);
+
+    // Fetch the forum CMs for the course.
+    foreach ($forumsvisibletouser as $visibleforum) {
+        $cms[] = $visibleforum;
+    }
+
+    $context = \context_course::instance($courseid);
+    $title = $course->fullname;
+    // Export currently only supports single forum exports.
+    $canexport = false;
+    $redirecturl = new moodle_url('/course/view.php', ['id' => $courseid]);
+    $numforums = count($forumsvisibletouser);
+    $iscoursereport = true;
+
+    // Specify whether user has access to all forums in the course.
+    $accessallforums = empty(array_diff($allforumidsincourse, $filters['forums']));
+}
+
+$pageurl = new moodle_url('/mod/forum/report/summary/index.php', $pageurlparams);
+
+$PAGE->set_url($pageurl);
+$PAGE->set_pagelayout('report');
+$PAGE->set_title($title);
+$PAGE->set_heading($course->fullname);
+$PAGE->navbar->add(get_string('nodetitle', 'forumreport_summary'));
+
+$allowbulkoperations = !$download && !empty($CFG->messaging) && has_capability('moodle/course:bulkmessaging', $context);
+$canseeprivatereplies = false;
+$hasviewall = false;
+$privatereplycapcount = 0;
+$viewallcount = 0;
+$canview = false;
+
+foreach ($cms as $cm) {
+    $forumcontext = $cm->context;
+
+    // This capability is required in at least one of the given contexts to view any version of the report.
+    if (has_capability('forumreport/summary:view', $forumcontext)) {
+        $canview = true;
+    }
+
+    if (has_capability('mod/forum:readprivatereplies', $forumcontext)) {
+        $privatereplycapcount++;
+    }
+
+    if (has_capability('forumreport/summary:viewall', $forumcontext)) {
+        $viewallcount++;
+    }
+}
+
+if (!$canview) {
     redirect($redirecturl);
 }
 
-$course = $modinfo->get_course();
+// Only use private replies if user has that cap in all forums in the report.
+if ($numforums === $privatereplycapcount) {
+    $canseeprivatereplies = true;
+}
 
-$urlparams = [
-    'courseid' => $courseid,
-    'forumid' => $forumid,
-    'perpage' => $perpage,
-];
-$url = new moodle_url("/mod/forum/report/summary/index.php", $urlparams);
-
-$PAGE->set_url($url);
-$PAGE->set_pagelayout('report');
-$PAGE->set_title($forumname);
-$PAGE->set_heading($course->fullname);
-$PAGE->navbar->add(get_string('nodetitle', "forumreport_summary"));
+// Will only show all users if user has the cap for all forums in the report.
+if ($numforums === $viewallcount) {
+    $hasviewall = true;
+}
 
 // Prepare and display the report.
-$allowbulkoperations = !$download && !empty($CFG->messaging) && has_capability('moodle/course:bulkmessaging', $context);
-$canseeprivatereplies = has_capability('mod/forum:readprivatereplies', $context);
-$canexport = !$download && has_capability('mod/forum:exportforum', $context);
-
 $table = new \forumreport_summary\summary_table($courseid, $filters, $allowbulkoperations,
-        $canseeprivatereplies, $perpage, $canexport);
-$table->baseurl = $url;
+        $canseeprivatereplies, $perpage, $canexport, $iscoursereport, $accessallforums);
+$table->baseurl = $pageurl;
 
 $eventparams = [
     'context' => $context,
     'other' => [
         'forumid' => $forumid,
-        'hasviewall' => has_capability('forumreport/summary:viewall', $context),
+        'hasviewall' => $hasviewall,
     ],
 ];
 
@@ -101,16 +167,23 @@ if ($download) {
     \forumreport_summary\event\report_viewed::create($eventparams)->trigger();
 
     echo $OUTPUT->header();
-    echo $OUTPUT->heading(get_string('summarytitle', 'forumreport_summary', $forumname), 2, 'p-b-2');
+    echo $OUTPUT->heading(get_string('summarytitle', 'forumreport_summary', $title), 2, 'p-b-2');
 
     if (!empty($filters['groups'])) {
         \core\notification::info(get_string('viewsdisclaimer', 'forumreport_summary'));
     }
 
+    // Allow switching to course report (or other forum user has access to).
+    $reporturl = new moodle_url('/mod/forum/report/summary/index.php', ['courseid' => $courseid]);
+    $forumselect = new single_select($reporturl, 'forumid', $forumselectoptions, $forumid, '');
+    $forumselect->set_label(get_string('forumselectlabel', 'forumreport_summary'));
+    echo $OUTPUT->render($forumselect);
+
     // Render the report filters form.
     $renderer = $PAGE->get_renderer('forumreport_summary');
 
-    echo $renderer->render_filters_form($cm, $url, $filters);
+    unset($filters['forums']);
+    echo $renderer->render_filters_form($course, $cms, $pageurl, $filters);
     $table->show_download_buttons_at(array(TABLE_P_BOTTOM));
     echo $renderer->render_summary_table($table);
     echo $OUTPUT->footer();
diff --git a/mod/forum/report/summary/lang/en/forumreport_summary.php b/mod/forum/report/summary/lang/en/forumreport_summary.php
index b741274894c..d9051b45e69 100644
--- a/mod/forum/report/summary/lang/en/forumreport_summary.php
+++ b/mod/forum/report/summary/lang/en/forumreport_summary.php
@@ -38,16 +38,18 @@ $string['filter:groupsbuttonlabel'] = 'Open the groups filter';
 $string['filter:groupsname'] = 'Groups';
 $string['filter:groupscountall'] = 'Groups (all)';
 $string['filter:groupscountnumber'] = 'Groups ({$a})';
+$string['forumselectlabel'] = 'Forum selected';
+$string['forumselectcourseoption'] = 'All forums in course';
 $string['latestpost'] = 'Most recent post';
 $string['exportposts'] = 'Export posts';
 $string['exportpostslabel'] = 'Export posts for {$a}';
-$string['nodetitle'] = 'Summary report';
+$string['nodetitle'] = 'Forum summary report';
 $string['pluginname'] = 'Forum summary report';
 $string['postcount'] = 'Number of discussions posted';
 $string['privacy:metadata'] = 'The Forum summary report plugin does not store any personal data.';
 $string['replycount'] = 'Number of replies posted';
 $string['summary:viewall'] = 'Access summary report data for each user within a given forum or forums';
 $string['summary:view'] = 'Access summary report within a given forum or forums';
-$string['summarytitle'] = 'Summary report - {$a}';
+$string['summarytitle'] = 'Forum summary report - {$a}';
 $string['viewsdisclaimer'] = 'Number of views column is not filtered by group';
 $string['wordcount'] = 'Word count';
diff --git a/mod/forum/report/summary/renderer.php b/mod/forum/report/summary/renderer.php
index 1c61daed696..06d04480047 100644
--- a/mod/forum/report/summary/renderer.php
+++ b/mod/forum/report/summary/renderer.php
@@ -37,13 +37,14 @@ class forumreport_summary_renderer extends plugin_renderer_base {
     /**
      * Render the filters available for the forum summary report.
      *
-     * @param stdClass $cm The course module object.
+     * @param stdClass $course The course object.
+     * @param array $cms Array of course module objects.
      * @param moodle_url $actionurl The form action URL.
      * @param array $filters Optional array of currently applied filter values.
      * @return string The filter form HTML.
      */
-    public function render_filters_form(stdClass $cm, moodle_url $actionurl, array $filters = []): string {
-        $renderable = new \forumreport_summary\output\filters($cm, $actionurl, $filters);
+    public function render_filters_form(stdClass $course, array $cms, moodle_url $actionurl, array $filters = []): string {
+        $renderable = new \forumreport_summary\output\filters($course, $cms, $actionurl, $filters);
         $templatecontext = $renderable->export_for_template($this);
 
         return $this->render_from_template('forumreport_summary/filters', $templatecontext);
diff --git a/mod/forum/report/summary/templates/filters.mustache b/mod/forum/report/summary/templates/filters.mustache
index 09dde0e596c..f0b9f2eaf7f 100644
--- a/mod/forum/report/summary/templates/filters.mustache
+++ b/mod/forum/report/summary/templates/filters.mustache
@@ -61,7 +61,7 @@
     }
 }}
 
-<div class="pb-4" data-report-id="{{uniqid}}">
+<div class="pb-4 pt-4" data-report-id="{{uniqid}}">
     <form id="filtersform" name="filtersform" method="post" action="{{actionurl}}">
         <input type="hidden" name="submitted" value="true">
 
diff --git a/mod/forum/report/summary/tests/behat/bulk_message.feature b/mod/forum/report/summary/tests/behat/bulk_message.feature
index beac0d5b3ef..86fb4bbbb55 100644
--- a/mod/forum/report/summary/tests/behat/bulk_message.feature
+++ b/mod/forum/report/summary/tests/behat/bulk_message.feature
@@ -43,7 +43,7 @@ Feature: Message users in the summary report
     When I log in as "teacher1"
     And I am on "Course 1" course homepage
     And I follow "forum1"
-    And I navigate to "Summary report" in current page administration
+    And I navigate to "Forum summary report" in current page administration
     And I click on "Select 'Student 1'" "checkbox"
     And I click on "Select 'Student 3'" "checkbox"
     And I set the field "With selected users..." to "Send a message"
@@ -65,7 +65,7 @@ Feature: Message users in the summary report
     When I log in as "teacher1"
     And I am on "Course 1" course homepage
     And I follow "forum1"
-    And I navigate to "Summary report" in current page administration
+    And I navigate to "Forum summary report" in current page administration
     And I click on "Select all" "checkbox"
     And I set the field "With selected users..." to "Send a message"
     Then I should see "Send message to 3 people"
@@ -79,6 +79,6 @@ Feature: Message users in the summary report
     And I log in as "teacher1"
     And I am on "Course 1" course homepage
     And I follow "forum1"
-    And I navigate to "Summary report" in current page administration
+    And I navigate to "Forum summary report" in current page administration
     Then I should not see "With selected users..."
     And I should not see "Select all"
diff --git a/mod/forum/report/summary/tests/behat/course_summary.feature b/mod/forum/report/summary/tests/behat/course_summary.feature
new file mode 100644
index 00000000000..473bdade76e
--- /dev/null
+++ b/mod/forum/report/summary/tests/behat/course_summary.feature
@@ -0,0 +1,120 @@
+@mod @mod_forum @forumreport @forumreport_summary
+Feature: Course level forum summary report
+  In order to gain an overview of students' forum activities across a course
+  As a teacher
+  I should be able to prepare a summary report of all forums in a course
+
+  Background:
+    Given the following "users" exist:
+      | username | firstname | lastname | email                |
+      | teacher1 | Teacher   | 1        | teacher1@example.com |
+      | student1 | Student   | 1        | student1@example.com |
+      | student2 | Student   | 2        | student2@example.com |
+      | student3 | Student   | 3        | student3@example.com |
+    And the following "courses" exist:
+      | fullname | shortname |
+      | Course 1 | C1        |
+      | Course 2 | C2        |
+    And the following "course enrolments" exist:
+      | user     | course | role           |
+      | teacher1 | C1     | editingteacher |
+      | teacher1 | C2     | editingteacher |
+      | student1 | C1     | student        |
+      | student2 | C1     | student        |
+      | student2 | C2     | student        |
+      | student3 | C2     | student        |
+    And the following "activities" exist:
+      | activity | name   | description | course | idnumber |
+      | forum    | forum1 | C1 forum 1  | C1     | forum1   |
+      | forum    | forum2 | C1 forum 2  | C1     | forum2   |
+      | forum    | forum3 | C1 forum 3  | C1     | forum3   |
+      | forum    | forum4 | C2 forum 1  | C2     | forum4   |
+    And the following forum discussions exist in course "Course 1":
+      | user     | forum  | name        | message      | created                 |
+      | teacher1 | forum1 | discussion1 | Discussion 1 | ##2018-01-14 09:00:00## |
+      | teacher1 | forum2 | discussion2 | Discussion 2 | ##2019-03-27 12:10:00## |
+      | teacher1 | forum3 | discussion3 | Discussion 3 | ##2019-12-25 15:20:00## |
+      | teacher1 | forum3 | discussion4 | Discussion 4 | ##2019-12-26 09:30:00## |
+      | student1 | forum2 | discussion5 | Discussion 5 | ##2019-06-06 18:40:00## |
+      | student1 | forum3 | discussion6 | Discussion 6 | ##2020-01-25 11:50:00## |
+    And the following forum replies exist in course "Course 1":
+      | user     | forum  | discussion  | subject | message | created                 |
+      | teacher1 | forum1 | discussion1 | Re d1   | Reply 1 | ##2018-02-15 11:10:00## |
+      | teacher1 | forum2 | discussion5 | Re d5   | Reply 2 | ##2019-06-09 18:20:00## |
+      | teacher1 | forum2 | discussion5 | Re d5   | Reply 3 | ##2019-07-10 09:30:00## |
+      | student1 | forum1 | discussion1 | Re d1   | Reply 4 | ##2018-01-25 16:40:00## |
+      | student1 | forum2 | discussion2 | Re d6   | Reply 5 | ##2019-03-28 11:50:00## |
+      | student1 | forum3 | discussion4 | Re d4   | Reply 6 | ##2019-12-30 20:00:00## |
+    And the following forum discussions exist in course "Course 2":
+      | user     | forum  | name        | message      | created                 |
+      | teacher1 | forum4 | discussion7 | Discussion 7 | ##2020-01-29 15:00:00## |
+      | student2 | forum4 | discussion8 | Discussion 8 | ##2020-02-02 16:00:00## |
+    And the following forum replies exist in course "Course 2":
+      | user     | forum  | discussion  | subject | message | created                 |
+      | teacher1 | forum4 | discussion8 | Re d8   | Reply 7 | ##2020-02-03 09:45:00## |
+      | student2 | forum4 | discussion7 | Re d7   | Reply 8 | ##2020-02-04 13:50:00## |
+
+  Scenario: Course forum summary report can be viewed by teacher and contains accurate data
+    When I log in as "teacher1"
+    And I am on "Course 1" course homepage
+    And I follow "forum2"
+    And I navigate to "Forum summary report" in current page administration
+    And I should see "Export posts"
+    And the following should exist in the "forumreport_summary_table" table:
+    # |                      | Discussions | Replies |                                    |                                   |
+      | First name / Surname | -3-         | -4-     | Earliest post                      | Most recent post                  |
+      | Student 1            | 1           | 1       | Thursday, 28 March 2019, 11:50 AM  | Thursday, 6 June 2019, 6:40 PM    |
+      | Student 2            | 0           | 0       | -                                  | -                                 |
+      | Teacher 1            | 1           | 2       | Wednesday, 27 March 2019, 12:10 PM | Wednesday, 10 July 2019, 9:30 AM  |
+    And the following should not exist in the "forumreport_summary_table" table:
+      | First name / Surname |
+      | Student 3            |
+    And the "Forum selected" select box should contain "All forums in course"
+    And the "Forum selected" select box should contain "forum1"
+    And the "Forum selected" select box should contain "forum2"
+    And the "Forum selected" select box should contain "forum3"
+    And the "Forum selected" select box should not contain "forum4"
+    Then I select "All forums in course" from the "Forum selected" singleselect
+    And I should not see "Export posts"
+    And the following should exist in the "forumreport_summary_table" table:
+    # |                      | Discussions | Replies |                                    |                                     |
+      | First name / Surname | -3-         | -4-     | Earliest post                      | Most recent post                    |
+      | Student 1            | 2           | 3       | Thursday, 25 January 2018, 4:40 PM | Saturday, 25 January 2020, 11:50 AM |
+      | Student 2            | 0           | 0       | -                                  | -                                   |
+      | Teacher 1            | 4           | 3       | Sunday, 14 January 2018, 9:00 AM   | Thursday, 26 December 2019, 9:30 AM |
+    And the following should not exist in the "forumreport_summary_table" table:
+      | First name / Surname |
+      | Student 3            |
+
+  Scenario: Students given the view capability can view their own course report data
+    Given the following "permission overrides" exist:
+      | capability               | permission | role    | contextlevel | reference |
+      | forumreport/summary:view | Allow      | student | Course       | C1        |
+    When I log in as "student1"
+    And I am on "Course 1" course homepage
+    And I follow "forum1"
+    And I navigate to "Forum summary report" in current page administration
+    And the following should exist in the "forumreport_summary_table" table:
+    # |                      | Discussions | Replies |                                    |                                    |
+      | First name / Surname | -2-         | -3-     | Earliest post                      | Most recent post                   |
+      | Student 1            | 0           | 1       | Thursday, 25 January 2018, 4:40 PM | Thursday, 25 January 2018, 4:40 PM |
+    And the following should not exist in the "forumreport_summary_table" table:
+      | First name / Surname |
+      | Student 2            |
+      | Student 3            |
+      | Teacher 1            |
+    And the "Forum selected" select box should contain "All forums in course"
+    And the "Forum selected" select box should contain "forum1"
+    And the "Forum selected" select box should contain "forum2"
+    And the "Forum selected" select box should contain "forum3"
+    And the "Forum selected" select box should not contain "forum4"
+    Then I select "All forums in course" from the "Forum selected" singleselect
+    And the following should exist in the "forumreport_summary_table" table:
+    # |                      | Discussions | Replies |                                    |                                     |
+      | First name / Surname | -2-         | -3-     | Earliest post                      | Most recent post                    |
+      | Student 1            | 2           | 3       | Thursday, 25 January 2018, 4:40 PM | Saturday, 25 January 2020, 11:50 AM |
+    And the following should not exist in the "forumreport_summary_table" table:
+      | First name / Surname |
+      | Student 2            |
+      | Student 3            |
+      | Teacher 1            |
diff --git a/mod/forum/report/summary/tests/behat/private_replies.feature b/mod/forum/report/summary/tests/behat/private_replies.feature
index 92d040d008a..ab80ad431c7 100644
--- a/mod/forum/report/summary/tests/behat/private_replies.feature
+++ b/mod/forum/report/summary/tests/behat/private_replies.feature
@@ -44,7 +44,7 @@ Feature: Include private replies in the summary report
     When I log in as "teacher2"
     And I am on "Course 1" course homepage
     And I follow "forum1"
-    And I navigate to "Summary report" in current page administration
+    And I navigate to "Forum summary report" in current page administration
     Then "Teacher 1" row "Number of replies posted" column of "forumreport_summary_table" table should contain "3"
 
   Scenario: Private replies are not counted when Teacher has not capability
@@ -54,5 +54,5 @@ Feature: Include private replies in the summary report
     When I log in as "teacher2"
     And I am on "Course 1" course homepage
     And I follow "forum1"
-    And I navigate to "Summary report" in current page administration
+    And I navigate to "Forum summary report" in current page administration
     Then "Teacher 1" row "Number of replies posted" column of "forumreport_summary_table" table should contain "2"
diff --git a/mod/forum/report/summary/tests/behat/summary_data_access.feature b/mod/forum/report/summary/tests/behat/summary_data_access.feature
index f7f4776f20a..0fed1f2b472 100644
--- a/mod/forum/report/summary/tests/behat/summary_data_access.feature
+++ b/mod/forum/report/summary/tests/behat/summary_data_access.feature
@@ -36,7 +36,7 @@ Feature: Report relevant content availability
     Given I log in as "teacher1"
     When I am on "Course 1" course homepage
     And I follow "forum1"
-    And I navigate to "Summary report" in current page administration
+    And I navigate to "Forum summary report" in current page administration
     Then the following should exist in the "forumreport_summary_table" table:
       | -2-       | -3- | -4- | -5- | -6- | -7- | -8- |
       | Student 1 | 1   | 1   | 5   | 0   | 3   | 14  |
@@ -60,7 +60,7 @@ Feature: Report relevant content availability
     Given I log in as "student1"
     When I am on "Course 1" course homepage
     And I follow "forum1"
-    Then "Summary report" "link" should not exist in current page administration
+    Then "Forum summary report" "link" should not exist in current page administration
 
   @javascript
   Scenario: Students given the view capability can only view their own report data
@@ -70,7 +70,7 @@ Feature: Report relevant content availability
     When I log in as "student1"
     And I am on "Course 1" course homepage
     And I follow "forum1"
-    And I navigate to "Summary report" in current page administration
+    And I navigate to "Forum summary report" in current page administration
     Then the following should exist in the "forumreport_summary_table" table:
       | -1-       | -2- | -3- | -4- | -5- | -6- | -7- |
       | Student 1 | 1   | 1   | 5   | 1   | 3   | 14  |
diff --git a/mod/forum/report/summary/tests/behat/summary_data_attachments.feature b/mod/forum/report/summary/tests/behat/summary_data_attachments.feature
index a715a70b41b..b448a850d4a 100644
--- a/mod/forum/report/summary/tests/behat/summary_data_attachments.feature
+++ b/mod/forum/report/summary/tests/behat/summary_data_attachments.feature
@@ -44,7 +44,7 @@ Feature: Attachments count column data available
     When I log in as "teacher1"
     And I am on "Course 1" course homepage
     And I follow "forum1"
-    And I navigate to "Summary report" in current page administration
+    And I navigate to "Forum summary report" in current page administration
     Then "Teacher 1" row "Number of attachments" column of "forumreport_summary_table" table should contain "6"
     And "Student 1" row "Number of attachments" column of "forumreport_summary_table" table should contain "5"
     And "Student 2" row "Number of attachments" column of "forumreport_summary_table" table should contain "0"
diff --git a/mod/forum/report/summary/tests/behat/summary_data_post_dates.feature b/mod/forum/report/summary/tests/behat/summary_data_post_dates.feature
index c1834066f93..07fdff1c73b 100644
--- a/mod/forum/report/summary/tests/behat/summary_data_post_dates.feature
+++ b/mod/forum/report/summary/tests/behat/summary_data_post_dates.feature
@@ -46,7 +46,7 @@ Feature: Post date columns data available
     When I log in as "teacher1"
     And I am on "Course 1" course homepage
     And I follow "forum1"
-    And I navigate to "Summary report" in current page administration
+    And I navigate to "Forum summary report" in current page administration
     Then "Teacher 1" row "Earliest post" column of "forumreport_summary_table" table should contain "Tuesday, 2 January 2018, 9:00 AM"
     Then "Teacher 1" row "Most recent post" column of "forumreport_summary_table" table should contain "Sunday, 1 September 2019, 7:00 AM"
     Then "Student 1" row "Earliest post" column of "forumreport_summary_table" table should contain "Wednesday, 27 March 2019, 4:00 AM"
diff --git a/mod/forum/report/summary/tests/behat/summary_filter_groups.feature b/mod/forum/report/summary/tests/behat/summary_filter_groups.feature
index 3fa3448e140..90393fa2670 100644
--- a/mod/forum/report/summary/tests/behat/summary_filter_groups.feature
+++ b/mod/forum/report/summary/tests/behat/summary_filter_groups.feature
@@ -65,7 +65,7 @@ Feature: Groups report filter is available if groups exist
     When I log in as "teacher1"
     And I am on "Course 1" course homepage
     And I follow "forum1"
-    And I navigate to "Summary report" in current page administration
+    And I navigate to "Forum summary report" in current page administration
     Then "Groups" "button" should exist
     And the following should exist in the "forumreport_summary_table" table:
     # |                      | Discussions | Replies |
@@ -115,7 +115,7 @@ Feature: Groups report filter is available if groups exist
     When I log in as "teacher1"
     And I am on "Course 1" course homepage
     And I follow "forum1"
-    And I navigate to "Summary report" in current page administration
+    And I navigate to "Forum summary report" in current page administration
     Then "Groups" "button" should exist
     And the following should exist in the "forumreport_summary_table" table:
     # |                      | Discussions | Replies |
@@ -151,7 +151,7 @@ Feature: Groups report filter is available if groups exist
     When I log in as "teacher1"
     And I am on "Course 1" course homepage
     And I follow "forum2"
-    And I navigate to "Summary report" in current page administration
+    And I navigate to "Forum summary report" in current page administration
     Then "Groups" "button" should exist
     And the following should exist in the "forumreport_summary_table" table:
     # |                      | Discussions | Replies |
@@ -177,7 +177,7 @@ Feature: Groups report filter is available if groups exist
     When I log in as "teacher1"
     And I am on "Course 1" course homepage
     And I follow "forum2"
-    And I navigate to "Summary report" in current page administration
+    And I navigate to "Forum summary report" in current page administration
     Then the following should exist in the "forumreport_summary_table" table:
     # |                      | Discussions | Replies |
       | First name / Surname | -3-         | -4-     |
@@ -202,7 +202,7 @@ Feature: Groups report filter is available if groups exist
     When I log in as "admin"
     And I am on "Course 1" course homepage
     And I follow "forum1"
-    And I navigate to "Summary report" in current page administration
+    And I navigate to "Forum summary report" in current page administration
     Then "Groups" "button" should exist
     And the following should exist in the "forumreport_summary_table" table:
     # |                      | Discussions | Replies |
@@ -221,3 +221,32 @@ Feature: Groups report filter is available if groups exist
     And I should not see "Student 2"
     And I should not see "With selected users..."
     And I should not see "Download table data as"
+
+  @javascript
+  Scenario: Course forum summary report can be filtered by group
+    When I log in as "teacher1"
+    And I am on "Course 1" course homepage
+    And I follow "forum2"
+    And I navigate to "Forum summary report" in current page administration
+    And I select "All forums in course" from the "Forum selected" singleselect
+    And I click on "Groups" "button"
+    And I click on "Clear" "button" in the "filter-groups-popover" "region"
+    And I click on "Group A" "checkbox" in the "filter-groups-popover" "region"
+    And I click on "Group C" "checkbox" in the "filter-groups-popover" "region"
+    And I click on "Save" "button"
+    And "Groups (2)" "button" should exist
+    Then the following should exist in the "forumreport_summary_table" table:
+    # |                      | Discussions | Replies |
+      | First name / Surname | -3-         | -4-     |
+      | Student 1            | 1           | 1       |
+      | Teacher 1            | 2           | 3       |
+    And I should not see "Student 2"
+    # Ensure re-ordering retains filter.
+    And I click on "Number of discussions posted" "link"
+    And "Groups (2)" "button" should exist
+    And the following should exist in the "forumreport_summary_table" table:
+    # |                      | Discussions | Replies |
+      | First name / Surname | -3-         | -4-     |
+      | Student 1            | 1           | 1       |
+      | Teacher 1            | 2           | 3       |
+    And I should not see "Student 2"
diff --git a/mod/forum/report/summary/tests/behat/summary_filter_no_groups.feature b/mod/forum/report/summary/tests/behat/summary_filter_no_groups.feature
index bd010fc1b29..7f837dce86a 100644
--- a/mod/forum/report/summary/tests/behat/summary_filter_no_groups.feature
+++ b/mod/forum/report/summary/tests/behat/summary_filter_no_groups.feature
@@ -52,7 +52,7 @@ Feature: Groups report filter is not available if no groups exist
     When I log in as "teacher1"
     And I am on "Course 1" course homepage
     And I follow "forum1"
-    And I navigate to "Summary report" in current page administration
+    And I navigate to "Forum summary report" in current page administration
     Then "Groups" "button" should not exist
     And the following should exist in the "forumreport_summary_table" table:
     # |                      | Discussions |