diff --git a/course/classes/hook/after_form_definition.php b/course/classes/hook/after_form_definition.php
new file mode 100644
index 00000000000..63599b7a71b
--- /dev/null
+++ b/course/classes/hook/after_form_definition.php
@@ -0,0 +1,94 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+namespace core_course\hook;
+
+use core\hook\described_hook;
+use course_edit_form;
+use MoodleQuickForm;
+
+/**
+ * Allows plugins to extend course form definition and add/remove/update form elements.
+ *
+ * @see course_edit_form::definition()
+ *
+ * @package    core
+ * @copyright  2023 Dmitrii Metelkin <dmitriim@catalyst-au.net>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class after_form_definition implements described_hook {
+
+    /**
+     * Course form wrapper.
+     *
+     * @var course_edit_form
+     */
+    protected $formwrapper;
+
+    /**
+     * Form to be extended.
+     *
+     * @var \MoodleQuickForm
+     */
+    protected $mform;
+
+    /**
+     * Creates new hook.
+     *
+     * @param course_edit_form $formwrapper Course form wrapper.
+     * @param MoodleQuickForm $mform Form to be extended.
+     */
+    public function __construct(course_edit_form $formwrapper, MoodleQuickForm $mform) {
+        $this->formwrapper = $formwrapper;
+        $this->mform = $mform;
+    }
+
+    /**
+     * Returns form.
+     *
+     * @return MoodleQuickForm
+     */
+    public function get_mform(): MoodleQuickForm {
+        return $this->mform;
+    }
+
+    /**
+     * Returns form wrapper instance.
+     *
+     * @return course_edit_form
+     */
+    public function get_formwrapper(): course_edit_form {
+        return $this->formwrapper;
+    }
+
+    /**
+     * Describes the hook purpose.
+     *
+     * @return string
+     */
+    public static function get_hook_description(): string {
+        return 'Allows plugins to extend course editing form';
+    }
+
+    /**
+     * List of tags that describe this hook.
+     *
+     * @return string[]
+     */
+    public static function get_hook_tags(): array {
+        return ['course'];
+    }
+}
diff --git a/course/classes/hook/after_form_definition_after_data.php b/course/classes/hook/after_form_definition_after_data.php
new file mode 100644
index 00000000000..45f22165628
--- /dev/null
+++ b/course/classes/hook/after_form_definition_after_data.php
@@ -0,0 +1,94 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+namespace core_course\hook;
+
+use core\hook\described_hook;
+use course_edit_form;
+use MoodleQuickForm;
+
+/**
+ * Allows plugins to extend course form after data is set.
+ *
+ * @see course_edit_form::definition_after_data()
+ *
+ * @package    core
+ * @copyright  2023 Dmitrii Metelkin <dmitriim@catalyst-au.net>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class after_form_definition_after_data implements described_hook {
+
+    /**
+     * Course form wrapper.
+     *
+     * @var course_edit_form
+     */
+    protected $formwrapper;
+
+    /**
+     * Form to be extended.
+     *
+     * @var \MoodleQuickForm
+     */
+    protected $mform;
+
+    /**
+     * Creates new hook.
+     *
+     * @param course_edit_form $formwrapper Course form wrapper..
+     * @param MoodleQuickForm $mform Form to be extended.
+     */
+    public function __construct(course_edit_form $formwrapper, MoodleQuickForm $mform) {
+        $this->formwrapper = $formwrapper;
+        $this->mform = $mform;
+    }
+
+    /**
+     * Returns form.
+     *
+     * @return MoodleQuickForm
+     */
+    public function get_mform(): MoodleQuickForm {
+        return $this->mform;
+    }
+
+    /**
+     * Returns form wrapper instance.
+     *
+     * @return course_edit_form
+     */
+    public function get_formwrapper(): course_edit_form {
+        return $this->formwrapper;
+    }
+
+    /**
+     * Describes the hook purpose.
+     *
+     * @return string
+     */
+    public static function get_hook_description(): string {
+        return 'Allows plugins to extend course editing form after data is set';
+    }
+
+    /**
+     * List of tags that describe this hook.
+     *
+     * @return string[]
+     */
+    public static function get_hook_tags(): array {
+        return ['course'];
+    }
+}
diff --git a/course/classes/hook/after_form_submission.php b/course/classes/hook/after_form_submission.php
new file mode 100644
index 00000000000..e51e4b95639
--- /dev/null
+++ b/course/classes/hook/after_form_submission.php
@@ -0,0 +1,94 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+namespace core_course\hook;
+
+use core\hook\described_hook;
+use stdClass;
+
+/**
+ * Allows plugins to extend course form submission.
+ *
+ * @see create_course()
+ * @see update_course()
+ *
+ * @package    core
+ * @copyright  2023 Dmitrii Metelkin <dmitriim@catalyst-au.net>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class after_form_submission implements described_hook {
+
+    /**
+     * Submitted data.
+     *
+     * @var stdClass
+     */
+    protected $data;
+
+    /**
+     * Is it a new course ?
+     *
+     * @var bool
+     */
+    protected $isnewcourse = false;
+
+    /**
+     * Creates new hook.
+     *
+     * @param stdClass $data Submitted data.
+     * @param bool $isnewcourse Is it a new course?
+     */
+    public function __construct(stdClass $data, bool $isnewcourse = false) {
+        $this->data = $data;
+        $this->isnewcourse = $isnewcourse;
+    }
+
+    /**
+     * Returns submitted data.
+     *
+     * @return stdClass
+     */
+    public function get_data(): stdClass {
+        return $this->data;
+    }
+
+    /**
+     * Informs callbacks if a hook called for a new course.
+     *
+     * @return bool
+     */
+    public function is_new_course(): bool {
+        return $this->isnewcourse;
+    }
+
+    /**
+     * Describes the hook purpose.
+     *
+     * @return string
+     */
+    public static function get_hook_description(): string {
+        return 'Allows plugins to extend saving of the course editing form';
+    }
+
+    /**
+     * List of tags that describe this hook.
+     *
+     * @return string[]
+     */
+    public static function get_hook_tags(): array {
+        return ['course'];
+    }
+}
diff --git a/course/classes/hook/after_form_validation.php b/course/classes/hook/after_form_validation.php
new file mode 100644
index 00000000000..d6fae028620
--- /dev/null
+++ b/course/classes/hook/after_form_validation.php
@@ -0,0 +1,137 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+namespace core_course\hook;
+
+use core\hook\described_hook;
+use course_edit_form;
+
+/**
+ * Allows plugins to extend course form validation.
+ *
+ * @see course_edit_form::validation()
+ *
+ * @package    core
+ * @copyright  2023 Dmitrii Metelkin <dmitriim@catalyst-au.net>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class after_form_validation implements described_hook {
+
+    /**
+     * Course form wrapper.
+     *
+     * @var course_edit_form
+     */
+    protected $formwrapper;
+
+    /**
+     * Submitted data.
+     *
+     * @var array
+     */
+    protected $data = [];
+
+    /**
+     * Submitted files.
+     *
+     * @var array
+     */
+    protected $files = [];
+
+    /**
+     * Plugin errors.
+     *
+     * @var array
+     */
+    protected $errors = [];
+
+    /**
+     * Creates new hook.
+     *
+     * @param course_edit_form $formwrapper Course form wrapper..
+     * @param array $data Submitted data.
+     * @param array $files Submitted files.
+     */
+    public function __construct(course_edit_form $formwrapper, array $data, array $files = []) {
+        $this->formwrapper = $formwrapper;
+        $this->data = $data;
+        $this->files = $files;
+    }
+
+    /**
+     * Returns form wrapper instance.
+     *
+     * @return course_edit_form
+     */
+    public function get_formwrapper(): course_edit_form {
+        return $this->formwrapper;
+    }
+
+    /**
+     * Returns submitted data.
+     *
+     * @return array
+     */
+    public function get_data(): array {
+        return $this->data;
+    }
+
+    /**
+     * Returns submitted files.
+     *
+     * @return array
+     */
+    public function get_files(): array {
+        return $this->files;
+    }
+
+    /**
+     * Return plugin generated errors.
+     *
+     * @return array
+     */
+    public function get_errors(): array {
+        return $this->errors;
+    }
+
+    /**
+     * Plugins implementing a callback can add validation errors.
+     *
+     * @param array $errors Validation errors generated by a plugin.
+     * @return void
+     */
+    public function add_errors(array $errors): void {
+        $this->errors = array_merge($this->errors, $errors);
+    }
+
+    /**
+     * Describes the hook purpose.
+     *
+     * @return string
+     */
+    public static function get_hook_description(): string {
+        return 'Allows plugins to extend a validation of the course editing form';
+    }
+
+    /**
+     * List of tags that describe this hook.
+     *
+     * @return string[]
+     */
+    public static function get_hook_tags(): array {
+        return ['course'];
+    }
+}
diff --git a/course/edit_form.php b/course/edit_form.php
index 5769e4ff24d..0c1879ad9bb 100644
--- a/course/edit_form.php
+++ b/course/edit_form.php
@@ -418,6 +418,8 @@ class course_edit_form extends moodleform {
         $handler->set_parent_context($categorycontext); // For course handler only.
         $handler->instance_form_definition($mform, empty($course->id) ? 0 : $course->id);
 
+        $hook = new \core_course\hook\after_form_definition($this, $mform);
+        \core\hook\manager::get_instance()->dispatch($hook);
 
         // When two elements we need a group.
         $buttonarray = array();
@@ -488,6 +490,9 @@ class course_edit_form extends moodleform {
         // Tweak the form with values provided by custom fields in use.
         $handler  = core_course\customfield\course_handler::create();
         $handler->instance_form_definition_after_data($mform, empty($courseid) ? 0 : $courseid);
+
+        $hook = new \core_course\hook\after_form_definition_after_data($this, $mform);
+        \core\hook\manager::get_instance()->dispatch($hook);
     }
 
     /**
@@ -534,6 +539,31 @@ class course_edit_form extends moodleform {
         $handler = core_course\customfield\course_handler::create();
         $errors  = array_merge($errors, $handler->instance_form_validation($data, $files));
 
+        $hook = new \core_course\hook\after_form_validation($this, $data, $files);
+        \core\hook\manager::get_instance()->dispatch($hook);
+        $pluginerrors = $hook->get_errors();
+        if (!empty($pluginerrors)) {
+            $errors = array_merge($errors, $pluginerrors);
+        }
+
         return $errors;
     }
+
+    /**
+     * Returns course object.
+     *
+     * @return \stdClass
+     */
+    public function get_course(): stdClass {
+        return $this->course;
+    }
+
+    /**
+     * Returns context.
+     *
+     * @return \core\context
+     */
+    public function get_context(): \core\context {
+        return $this->context;
+    }
 }
diff --git a/course/lib.php b/course/lib.php
index a8074c50473..a39eeab4342 100644
--- a/course/lib.php
+++ b/course/lib.php
@@ -2177,6 +2177,9 @@ function create_course($data, $editoroptions = NULL) {
     $data->id = $course->id;
     $handler->instance_form_save($data, true);
 
+    $hook = new \core_course\hook\after_form_submission($data, true);
+    \core\hook\manager::get_instance()->dispatch($hook);
+
     return $course;
 }
 
@@ -2425,6 +2428,9 @@ function update_course($data, $editoroptions = NULL) {
     $handler = core_course\customfield\course_handler::create();
     $handler->instance_form_save($data);
 
+    $hook = new \core_course\hook\after_form_submission($data);
+    \core\hook\manager::get_instance()->dispatch($hook);
+
     // Update with the new data
     $DB->update_record('course', $data);
     // make sure the modinfo cache is reset
diff --git a/course/upgrade.txt b/course/upgrade.txt
index dfebd3f3ce1..c55771df8e3 100644
--- a/course/upgrade.txt
+++ b/course/upgrade.txt
@@ -28,6 +28,11 @@ About the categories supported by the FEATURE_MOD_PURPOSE:
   * A new category has been added: MOD_PURPOSE_INTERACTIVECONTENT.
   * The MOD_PURPOSE_INTERFACE category has been deprecated. The styles associated with this category have been removed.
 The colors for all these purposes and the filters applied to outline them are defined in theme/boost/scss/moodle/variables.scss
+* New hooks for extending course form:
+ - core_course\hook\after_form_definition
+ - core_course\hook\after_form_definition_after_data
+ - core_course\hook\after_form_validation
+ - core_course\hook\after_form_submission
 
 === 4.3 ===
 * The `core_course_renderer::course_section_cm_completion` method has been removed, and can no longer be used
diff --git a/version.php b/version.php
index 0b512ae0930..0fc0fd2ea78 100644
--- a/version.php
+++ b/version.php
@@ -29,7 +29,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$version  = 2024022300.00;              // YYYYMMDD      = weekly release date of this DEV branch.
+$version  = 2024022300.01;              // YYYYMMDD      = weekly release date of this DEV branch.
                                         //         RR    = release increments - 00 in DEV branches.
                                         //           .XX = incremental changes.
 $release  = '4.4dev (Build: 20240223)'; // Human-friendly version name