diff --git a/lib/grouplib.php b/lib/grouplib.php
index 7fcf9bff790..bee8583d979 100644
--- a/lib/grouplib.php
+++ b/lib/grouplib.php
@@ -74,6 +74,8 @@ function groups_group_exists($groupid) {
 /**
  * Gets the name of a group with a specified id
  *
+ * Before output, you should call {@see format_string} on the result
+ *
  * @category group
  * @param int $groupid The id of the group
  * @return string The name of the group
@@ -86,6 +88,8 @@ function groups_get_group_name($groupid) {
 /**
  * Gets the name of a grouping with a specified id
  *
+ * Before output, you should call {@see format_string} on the result
+ *
  * @category group
  * @param int $groupingid The id of the grouping
  * @return string The name of the grouping
diff --git a/mod/assign/override_form.php b/mod/assign/override_form.php
index cce7bf41a62..f7a133cbb4c 100644
--- a/mod/assign/override_form.php
+++ b/mod/assign/override_form.php
@@ -106,8 +106,9 @@ class assign_override_form extends moodleform {
             // Group override.
             if ($this->groupid) {
                 // There is already a groupid, so freeze the selector.
-                $groupchoices = array();
-                $groupchoices[$this->groupid] = groups_get_group_name($this->groupid);
+                $groupchoices = [
+                    $this->groupid => format_string(groups_get_group_name($this->groupid), true, $this->context),
+                ];
                 $mform->addElement('select', 'groupid',
                         get_string('overridegroup', 'assign'), $groupchoices);
                 $mform->freeze('groupid');
@@ -127,7 +128,7 @@ class assign_override_form extends moodleform {
 
                 $groupchoices = array();
                 foreach ($groups as $group) {
-                    $groupchoices[$group->id] = $group->name;
+                    $groupchoices[$group->id] = format_string($group->name, true, $this->context);
                 }
                 unset($groups);
 
diff --git a/mod/assign/overridedelete.php b/mod/assign/overridedelete.php
index fb8a07c64f2..983d4b5f340 100644
--- a/mod/assign/overridedelete.php
+++ b/mod/assign/overridedelete.php
@@ -94,7 +94,7 @@ echo $OUTPUT->header();
 
 if ($override->groupid) {
     $group = $DB->get_record('groups', array('id' => $override->groupid), 'id, name');
-    $confirmstr = get_string("overridedeletegroupsure", "assign", $group->name);
+    $confirmstr = get_string("overridedeletegroupsure", "assign", format_string($group->name, true, ['context' => $context]));
 } else {
     $userfieldsapi = \core_user\fields::for_name();
     $namefields = $userfieldsapi->get_sql('', false, '', '', false)->selects;
diff --git a/mod/assign/overrides.php b/mod/assign/overrides.php
index 74640d2a372..dd65575ebae 100644
--- a/mod/assign/overrides.php
+++ b/mod/assign/overrides.php
@@ -235,8 +235,8 @@ foreach ($overrides as $override) {
                 $OUTPUT->pix_icon('t/delete', get_string('delete')) . '</a> ';
 
     if ($groupmode) {
-        $usergroupstr = '<a href="' . $groupurl->out(true,
-                array('group' => $override->groupid)) . '" >' . $override->name . '</a>';
+        $usergroupstr = '<a href="' . $groupurl->out(true, ['group' => $override->groupid]) . '" >' .
+            format_string($override->name, true, ['context' => $context]) . '</a>';
 
         // Move up.
         if ($override->sortorder > 1) {
diff --git a/mod/lesson/override_form.php b/mod/lesson/override_form.php
index 7ee2b31b22d..14ab068be65 100644
--- a/mod/lesson/override_form.php
+++ b/mod/lesson/override_form.php
@@ -95,8 +95,9 @@ class lesson_override_form extends moodleform {
             // Group override.
             if ($this->groupid) {
                 // There is already a groupid, so freeze the selector.
-                $groupchoices = array();
-                $groupchoices[$this->groupid] = groups_get_group_name($this->groupid);
+                $groupchoices = [
+                    $this->groupid => format_string(groups_get_group_name($this->groupid), true, $this->context),
+                ];
                 $mform->addElement('select', 'groupid',
                         get_string('overridegroup', 'lesson'), $groupchoices);
                 $mform->freeze('groupid');
@@ -112,7 +113,7 @@ class lesson_override_form extends moodleform {
 
                 $groupchoices = array();
                 foreach ($groups as $group) {
-                    $groupchoices[$group->id] = $group->name;
+                    $groupchoices[$group->id] = format_string($group->name, true, $this->context);
                 }
                 unset($groups);
 
diff --git a/mod/lesson/overridedelete.php b/mod/lesson/overridedelete.php
index ac552ca5b02..f872df76b8e 100644
--- a/mod/lesson/overridedelete.php
+++ b/mod/lesson/overridedelete.php
@@ -92,7 +92,7 @@ echo $OUTPUT->heading(format_string($lesson->name, true, array('context' => $con
 
 if ($override->groupid) {
     $group = $DB->get_record('groups', array('id' => $override->groupid), 'id, name');
-    $confirmstr = get_string("overridedeletegroupsure", "lesson", $group->name);
+    $confirmstr = get_string("overridedeletegroupsure", "lesson", format_string($group->name, true, ['context' => $context]));
 } else {
     $userfieldsapi = \core_user\fields::for_name();
     $namefields = $userfieldsapi->get_sql('', false, '', '', false)->selects;
diff --git a/mod/lesson/overrides.php b/mod/lesson/overrides.php
index 4db1a1a310a..2e81ea40491 100644
--- a/mod/lesson/overrides.php
+++ b/mod/lesson/overrides.php
@@ -284,8 +284,8 @@ foreach ($overrides as $override) {
                 $OUTPUT->pix_icon('t/delete', get_string('delete')) . '</a> ';
 
     if ($groupmode) {
-        $usergroupstr = '<a href="' . $groupurl->out(true,
-                array('group' => $override->groupid)) . '" >' . $override->name . '</a>';
+        $usergroupstr = '<a href="' . $groupurl->out(true, ['group' => $override->groupid]) . '" >' .
+            format_string($override->name, true, ['context' => $context]) . '</a>';
     } else {
         $usergroupstr = '<a href="' . $userurl->out(true,
                 array('id' => $override->userid)) . '" >' . fullname($override) . '</a>';
diff --git a/mod/quiz/override_form.php b/mod/quiz/override_form.php
index c44a4da696d..999701fc6cc 100644
--- a/mod/quiz/override_form.php
+++ b/mod/quiz/override_form.php
@@ -91,8 +91,9 @@ class quiz_override_form extends moodleform {
             // Group override.
             if ($this->groupid) {
                 // There is already a groupid, so freeze the selector.
-                $groupchoices = array();
-                $groupchoices[$this->groupid] = groups_get_group_name($this->groupid);
+                $groupchoices = [
+                    $this->groupid => format_string(groups_get_group_name($this->groupid), true, $this->context),
+                ];
                 $mform->addElement('select', 'groupid',
                         get_string('overridegroup', 'quiz'), $groupchoices);
                 $mform->freeze('groupid');
@@ -108,7 +109,7 @@ class quiz_override_form extends moodleform {
 
                 $groupchoices = array();
                 foreach ($groups as $group) {
-                    $groupchoices[$group->id] = $group->name;
+                    $groupchoices[$group->id] = format_string($group->name, true, $this->context);
                 }
                 unset($groups);
 
diff --git a/mod/quiz/overridedelete.php b/mod/quiz/overridedelete.php
index 117ab70fafc..b653b38f1ca 100644
--- a/mod/quiz/overridedelete.php
+++ b/mod/quiz/overridedelete.php
@@ -97,7 +97,7 @@ echo $OUTPUT->header();
 
 if ($override->groupid) {
     $group = $DB->get_record('groups', ['id' => $override->groupid], 'id, name');
-    $confirmstr = get_string("overridedeletegroupsure", "quiz", $group->name);
+    $confirmstr = get_string("overridedeletegroupsure", "quiz", format_string($group->name, true, ['context' => $context]));
 } else {
     $user = $DB->get_record('user', ['id' => $override->userid]);
     profile_load_custom_fields($user);
diff --git a/mod/quiz/overrides.php b/mod/quiz/overrides.php
index d419a0d2410..dcb8f746263 100644
--- a/mod/quiz/overrides.php
+++ b/mod/quiz/overrides.php
@@ -235,7 +235,7 @@ foreach ($overrides as $override) {
         $groupcell = new html_table_cell();
         $groupcell->rowspan = count($fields);
         $groupcell->text = html_writer::link(new moodle_url($groupurl, ['group' => $override->groupid]),
-                $override->name . $extranamebit);
+            format_string($override->name, true, ['context' => $context]) . $extranamebit);
         $usercells[] = $groupcell;
     } else {
         $usercell = new html_table_cell();