diff --git a/lang/en/ratingallocate.php b/lang/en/ratingallocate.php
index e49e6276..325b03e9 100644
--- a/lang/en/ratingallocate.php
+++ b/lang/en/ratingallocate.php
@@ -461,3 +461,7 @@
 and ratable choices by groups that had the ability to access them.
 * Only groups used in the *use groups* option can be selected.
 * If *no group* is selected, users that are in none of the groups used by a choice are shown.';
+
+// Language Strings for resetting.
+$string['remove_ratings_and_allocations'] = 'Delete all ratings and allocations';
+$string['ratings_and_allocations_deleted'] = 'Ratings and allocations deleted';
diff --git a/lib.php b/lib.php
index bb1ba248..71446a3d 100644
--- a/lib.php
+++ b/lib.php
@@ -663,3 +663,74 @@ function mod_ratingallocate_core_calendar_get_valid_event_timestart_range (\cale
     }
     return [$mindate, $maxdate];
 }
+
+/**
+ * This function is used by the reset_course_userdata function in moodlelib.
+ * This function will remove all ratings and allocations
+ * and clean up any related data.
+ *
+ * @global object
+ * @global object
+ * @param $data stdClass the data submitted from the reset course.
+ * @return array status array
+ */
+function ratingallocate_reset_userdata($data) {
+    global $CFG, $DB;
+
+    $componentstr = get_string('modulenameplural', RATINGALLOCATE_MOD_NAME);
+    $status = [];
+
+    $params = array('courseid' => $data->courseid);
+
+    if (!empty($data->reset_ratings_and_allocations)) {
+
+        // Delete all ratings.
+        $ratingidssql = "SELECT r.id FROM {ratingallocate_ratings} r
+                      INNER JOIN {ratingallocate_choices} c ON r.choiceid=c.id
+                      INNER JOIN {ratingallocate} ra ON c.ratingallocateid=ra.id
+                      WHERE ra.course= :courseid";
+        $DB->delete_records_select('ratingallocate_ratings', "id IN ($ratingidssql)", $params);
+
+        // Delete all allocations.
+        $allocationidssql = "SELECT a.id FROM {ratingallocate_allocations} a
+                            INNER JOIN {ratingallocate} r ON a.ratingallocateid=r.id
+                            WHERE r.course= :courseid";
+        $DB->delete_records_select('ratingallocate_allocations', "id IN ($allocationidssql)", $params);
+
+        $status[] = [
+            'component' => $componentstr,
+            'item' => get_string('ratings_and_allocations_deleted', RATINGALLOCATE_MOD_NAME),
+            'error' => false];
+    }
+
+    // Updating dates - shift may be negative too.
+    if ($data->timeshift) {
+        // Any changes to the list of dates that needs to be rolled should be same during course restore and course reset.
+        // See MDL-9367.
+        shift_course_mod_dates(RATINGALLOCATE_MOD_NAME, array('accesstimestart', 'accesstimestop'), $data->timeshift, $data->courseid);
+        $status[] = array('component' => $componentstr, 'item' => get_string('datechanged'), 'error' => false);
+    }
+
+    return $status;
+}
+
+/**
+ * Called by course/reset.php.
+ *
+ * @param MoodleQuickForm $mform form passed by reference
+ */
+function ratingallocate_reset_course_form_definition($mform) {
+
+    $mform->addElement('header', 'ratingallocateheader', get_string('modulenameplural', RATINGALLOCATE_MOD_NAME));
+    $mform->addElement('advcheckbox', 'reset_ratings_and_allocations',
+        get_string('remove_ratings_and_allocations', RATINGALLOCATE_MOD_NAME));
+
+}
+
+/**
+ * Course reset form defaults.
+ * @return array the defaults.
+ */
+function ratingallocate_reset_course_form_defaults($course) {
+    return ['reset_ratings_and_allocations' => 1];
+}
diff --git a/locallib.php b/locallib.php
index 37e3b6a7..e88685ab 100644
--- a/locallib.php
+++ b/locallib.php
@@ -1818,6 +1818,13 @@ public function get_choices() {
                 ), this_db\ratingallocate_choices::TITLE);
     }
 
+    /**
+     * Returns the id of the ratingallocate instance.
+     */
+    public function get_ratingallocateid() {
+        return $this->ratingallocateid;
+    }
+
     /**
      * Returns an array of choices with the given ids
      *
diff --git a/tests/locallib_test.php b/tests/locallib_test.php
index dd3dc67c..789ec24c 100644
--- a/tests/locallib_test.php
+++ b/tests/locallib_test.php
@@ -231,4 +231,91 @@ public function test_get_option_titles_mixed() {
         $result = $ratingallocate->get_options_titles($ratings);
         $this->assertEquals($expectedresult, $result);
     }
+
+    public function test_reset_userdata() {
+        global $DB;
+
+        $this->resetAfterTest();
+
+        $course = $this->getDataGenerator()->create_course();
+        $teacher = \mod_ratingallocate_generator::create_user_and_enrol($this, $course, true);
+        $student1 = \mod_ratingallocate_generator::create_user_and_enrol($this, $course);
+        $student2 = \mod_ratingallocate_generator::create_user_and_enrol($this, $course);
+
+        $this->setUser($teacher);
+
+        $choices = array(
+            array(
+                'title' => 'C1',
+                'maxsize' => '1',
+                'active' => '1',
+            ),
+            array(
+                'title' => 'C2',
+                'maxsize' => '1',
+                'active' => '1',
+            )
+        );
+        $ratings = array(
+            $student1->id => array(
+                array(
+                    'choice' => 'C1',
+                    'rating' => 1
+                ),
+                array(
+                    'choice' => 'C2',
+                    'rating' => 0
+                )
+            ),
+            $student2->id => array(
+                array(
+                    'choice' => 'C1',
+                    'rating' => 0
+                ),
+                array(
+                    'choice' => 'C2',
+                    'rating' => 1
+                )
+            )
+        );
+
+        // Create ratingallocate instance.
+        $ratingallocate = \mod_ratingallocate_generator::get_closed_ratingallocate_for_teacher($this, $choices,
+            $course, $ratings);
+
+        // Simulate Allocation.
+        $ratingallocate->distrubute_choices();
+
+        // There should be two ratings in the course.
+        $this->assertEquals(2, count($ratingallocate->get_users_with_ratings()));
+        $this->assertEquals(2, count($ratingallocate->get_allocations()));
+
+        // Keep dates for comparison.
+        $accesstimestart = $DB->get_record('ratingallocate', ['id' => $ratingallocate->get_ratingallocateid()], 'accesstimestart')->accesstimestart;
+        $accesstimestop = $DB->get_record('ratingallocate', ['id' => $ratingallocate->get_ratingallocateid()], 'accesstimestop')->accesstimestop;
+
+        // Now try and reset.
+        $data = new \stdClass();
+        $data->reset_ratings_and_allocations = 1;
+        $data->courseid = $course->id;
+        $data->timeshift = (2 * DAYSECS);
+        $this->setUser($teacher);
+        $status = ratingallocate_reset_userdata($data);
+
+        // Reload the instance data.
+        $ra = $DB->get_record('ratingallocate', array('id' => $ratingallocate->get_ratingallocateid()));
+        $ratingallocate = \mod_ratingallocate_generator::get_ratingallocate($ra);
+
+        // There should be no ratings and allocations anymore.
+        $this->assertEquals(0, count($ratingallocate->get_allocations()));
+        $this->assertEquals(0, count($ratingallocate->get_ratings_for_rateable_choices()));
+        if (isset($status['error'])) {
+            $this->assertEquals(false, $status['error']);
+        }
+
+        // Check if the timeshift happened successfully.
+        $this->assertEquals($accesstimestart + (2 * DAYSECS), $ra->accesstimestart);
+        $this->assertEquals($accesstimestop + (2 * DAYSECS), $ra->accesstimestop);
+    }
+
 }