diff --git a/mod/data/backuplib.php b/mod/data/backuplib.php
index 952e90fdb41..8666439dc3d 100644
--- a/mod/data/backuplib.php
+++ b/mod/data/backuplib.php
@@ -77,13 +77,11 @@ function data_backup_one_mod($bf,$preferences,$data) {
     fwrite ($bf,full_tag("MODTYPE",4,false,"data"));
     fwrite ($bf,full_tag("NAME",4,false,$data->name));
     fwrite ($bf,full_tag("INTRO",4,false,$data->intro));
-    fwrite ($bf,full_tag("RATINGS",4,false,$data->ratings));
     fwrite ($bf,full_tag("COMMENTS",4,false,$data->comments));
     fwrite ($bf,full_tag("TIMEAVAILABLEFROM",4,false,$data->timeavailablefrom));
     fwrite ($bf,full_tag("TIMEAVAILABLETO",4,false,$data->timeavailableto));
     fwrite ($bf,full_tag("TIMEVIEWFROM",4,false,$data->timeviewfrom));
     fwrite ($bf,full_tag("TIMEVIEWTO",4,false,$data->timeviewto));
-    fwrite ($bf,full_tag("PARTICIPANTS",4,false,$data->participants));
     fwrite ($bf,full_tag("REQUIREDENTRIES",4,false,$data->requiredentries));
     fwrite ($bf,full_tag("REQUIREDENTRIESTOVIEW",4,false,$data->requiredentriestoview));
     fwrite ($bf,full_tag("MAXENTRIES",4,false,$data->maxentries));
@@ -100,7 +98,6 @@ function data_backup_one_mod($bf,$preferences,$data) {
     fwrite ($bf,full_tag("APPROVAL",4,false,$data->approval));
     fwrite ($bf,full_tag("SCALE",4,false,$data->scale));
     fwrite ($bf,full_tag("ASSESSED",4,false,$data->assessed));
-    fwrite ($bf,full_tag("ASSESSPUBLIC",4,false,$data->assesspublic));
     
     // if we've selected to backup users info, then call any other functions we need
     // including backing up individual files
diff --git a/mod/data/lib.php b/mod/data/lib.php
index 1e3ef597917..373771abf16 100755
--- a/mod/data/lib.php
+++ b/mod/data/lib.php
@@ -23,9 +23,6 @@
 ///////////////////////////////////////////////////////////////////////////
 
 /// Some constants
-define ('DATA_TEACHERS_ONLY', 1);
-define ('DATA_STUDENTS_ONLY', 2);
-define ('DATA_TEACHERS_AND_STUDENTS', 3);
 define ('DATA_MAX_ENTRIES', 50);
 define ('DATA_PERPAGE_SINGLE', 1);
 
@@ -595,8 +592,8 @@ function data_tags_check($dataid, $template){
 function data_add_instance($data) {
     global $CFG;
 
-    if (empty($data->ratings)) {
-        $data->ratings = 0;
+    if (empty($data->assessed)) {
+        $data->assessed = 0;
     }
 
     $data->timemodified = time();
@@ -645,8 +642,8 @@ function data_update_instance($data) {
     
     $data->id = $data->instance;
     
-    if (empty($data->ratings)) {
-        $data->ratings = 0;
+    if (empty($data->assessed)) {
+        $data->assessed = 0;
     }
     
     $data->timemodified = time();
@@ -994,17 +991,16 @@ function data_print_ratings($data, $record) {
     $context = get_context_instance(CONTEXT_MODULE, $cm->id);
     
     $ratingsmenuused = false;
-    if ($data->ratings and !empty($USER->id)) {
+    if ($data->assessed and !empty($USER->id)) {
         if ($ratings->scale = make_grades_menu($data->scale)) {
-            $ratings->assesspublic = $data->assesspublic;
-            $ratings->allow = ($data->assessed != 2 or has_capability('mod/data:rate', $context));
+            $ratings->allow = ($data->assessed and has_capability('mod/data:rate', $context));
             if ($ratings->allow) {
                 echo '<div class="ratings" align="center">';
                 echo '<form name="form" method="post" action="rate.php">';
                 $useratings = true;
 
                 if ($useratings) {
-                    if ((has_capability('mod/data:rate', $context) or $ratings->assesspublic) and !data_isowner($record->id)) {
+                    if (has_capability('mod/data:rate', $context) and !data_isowner($record->id)) {
                         data_print_ratings_mean($record->id, $ratings->scale, has_capability('mod/data:rate', $context));
                         if (!empty($ratings->allow)) {
                             echo '&nbsp;';
diff --git a/mod/data/mod.html b/mod/data/mod.html
index c8a3a26d15c..8f430a2dc11 100644
--- a/mod/data/mod.html
+++ b/mod/data/mod.html
@@ -29,9 +29,6 @@
     if (!isset($form->schedule)) {
         $form->schedule = 0;
     }
-    if (!isset($form->participants)) {
-        $form->participants = DATA_TEACHERS_AND_STUDENTS;
-    }
     if (!isset($form->requiredentries)) {
         $form->requiredentries = 0;
     }
@@ -47,9 +44,6 @@
     if (!isset($form->comments)) {
         $form->comments = 0;
     }
-    if (!isset($form->ratings)) {
-        $form->ratings = 0;
-    }
     if (!isset($form->approval)) {
         $form->approval = 0;
     }
@@ -57,10 +51,7 @@
         $form->scale = 0;
     }
     if (!isset($form->assessed)) {
-        $form->assessed = 1;
-    }
-    if (!isset($form->assesspublic)) {
-        $form->assesspublic = 1;
+        $form->assessed = 0;
     }
 ?>
 
@@ -168,21 +159,6 @@
 </tr>
 
 
-<tr valign="top">
-    <td align="right"><b><?php print_string('participants', 'data') ?>:</b></td>
-    <td>
-    <?php
-        $a->teachers = $course->teachers;
-        $a->students = $course->students;
-        $options = array(DATA_TEACHERS_ONLY => $a->teachers,
-                         DATA_TEACHERS_AND_STUDENTS => get_string('teachersandstudents', 'data', $a));
-        choose_from_menu($options, 'participants', $form->participants, '');
-        helpbutton('participants', get_string('participants', 'data'), 'data');
-    ?>
-    </td>
-</tr>
-
-
 <tr valign="top">
     <td align="right"><b><?php print_string('requiredentries', 'data') ?>:</b></td>
     <td>
@@ -258,18 +234,20 @@
             <td colspan="2">
         <?php
             echo '<script type="text/javascript">';
-            echo "  var subitemsall = ['assessed', 'assesspublic', 'scale'];";
+            echo "  var subitemsall = ['scale'];";
             echo '</script>';
 
-            echo '<input name="ratings" type="checkbox" alt="'.get_string('ratingsuse', 'data').'" value="1" ';
-            echo " onclick=\"return lockoptions('form','ratings', subitemsall)\" ";
-            if ($form->ratings) {
+            //echo '<input name="ratings" type="checkbox" alt="'.get_string('ratingsuse', 'data').'" value="1" ';
+            echo '<input name="assessed" type="checkbox" alt="'.get_string('ratingsuse', 'data').'" value="1" ';
+            echo " onclick=\"return lockoptions('form', 'assessed', subitemsall)\" ";
+            if ($form->assessed) {
                 echo ' checked="checked" ';
             }
             echo ' />';
             echo '&nbsp;'.get_string('ratingsuse', 'data').':';
             echo '</td></tr>';
 
+/*
             echo '<tr><td>';
             // The odd order below was to maintain backward compatibility
             unset($options);
@@ -279,16 +257,7 @@
             echo '</td><td>';
             choose_from_menu($options, 'assessed', $form->assessed, '');
             echo '</td></tr>';
-
-            echo '<tr><td>';
-            unset($options);
-            $options[0] = get_string('ratingpublicnot', 'data', $course->students);
-            $options[1] = get_string('ratingpublic', 'data', $course->students);
-            echo get_string('view').': ';
-            echo '</td><td>';
-            choose_from_menu($options, 'assesspublic', $form->assesspublic, '');
-            echo '</td></tr>';
-
+*/
             echo '<tr><td>';
             echo get_string('grade').': ';
             echo '</td><td>';
@@ -298,11 +267,10 @@
             echo '</td></tr></table>';
 
             echo '<input type="hidden" name="hassessed"     value="0" />';
-            echo '<input type="hidden" name="hassesspublic" value="0" />';
             echo '<input type="hidden" name="hscale"        value="0" />';
 
             echo '<script type="text/javascript">';
-            echo "lockoptions('form','ratings', subitemsall);";
+            echo "lockoptions('form','assessed', subitemsall);";
             echo '</script>';
 
         ?>
diff --git a/mod/data/restorelib.php b/mod/data/restorelib.php
index e3933dc755d..ddefa21520e 100644
--- a/mod/data/restorelib.php
+++ b/mod/data/restorelib.php
@@ -60,7 +60,10 @@ function data_restore_mods($mod,$restore) {
 
         $database->name = backup_todb($info['MOD']['#']['NAME']['0']['#']);
         $database->intro = backup_todb($info['MOD']['#']['INTRO']['0']['#']);
-        $database->ratings = backup_todb($info['MOD']['#']['RATINGS']['0']['#']);
+        // Only relevant for restoring backups from 1.6 in a 1.7 install.
+        if (isset($info['MOD']['#']['RATINGS']['0']['#'])) {
+            $database->ratings = backup_todb($info['MOD']['#']['RATINGS']['0']['#']);
+        }
         $database->comments = backup_todb($info['MOD']['#']['COMMENTS']['0']['#']);
         $database->timeavailablefrom = backup_todb($info['MOD']['#']['TIMEAVAILABLEFROM']['0']['#']);
         $date = usergetdate($database->timeavailablefrom);
@@ -87,7 +90,10 @@ function data_restore_mods($mod,$restore) {
         $database->timeviewto += $restore->course_startdateoffset;
         $date = usergetdate($database->timeviewto);
         fwrite ($restorelog_file,"&nbsp;&nbsp;&nbsp;the TIMEVIEWTO is now  " .$date['weekday'].",  ".$date['mday']." ".$date['month']." ".$date['year']."<br>");
-        $database->participants = backup_todb($info['MOD']['#']['PARTICIPANTS']['0']['#']);
+        // Only relevant for restoring backups from 1.6 in a 1.7 install.
+        if (isset($info['MOD']['#']['PARTICIPANTS']['0']['#'])) {
+            $database->participants = backup_todb($info['MOD']['#']['PARTICIPANTS']['0']['#']);
+        }
         $database->requiredentries = backup_todb($info['MOD']['#']['REQUIREDENTRIES']['0']['#']);
         $database->requiredentriestoview = backup_todb($info['MOD']['#']['REQUIREDENTRIESTOVIEW']['0']['#']);
         $database->maxentries = backup_todb($info['MOD']['#']['MAXENTRIES']['0']['#']);
@@ -104,7 +110,10 @@ function data_restore_mods($mod,$restore) {
         $database->approval = backup_todb($info['MOD']['#']['APPROVAL']['0']['#']);
         $database->scale = backup_todb($info['MOD']['#']['SCALE']['0']['#']);
         $database->assessed = backup_todb($info['MOD']['#']['ASSESSED']['0']['#']);
-        $database->assesspublic = backup_todb($info['MOD']['#']['ASSESSPUBLIC']['0']['#']);
+        // Only relevant for restoring backups from 1.6 in a 1.7 install.
+        if (isset($info['MOD']['#']['ASSESSPUBLIC']['0']['#'])) {
+            $database->assesspublic = backup_todb($info['MOD']['#']['ASSESSPUBLIC']['0']['#']);
+        }
         
         $newid = insert_record ('data', $database);