diff --git a/mod/lesson/report.php b/mod/lesson/report.php
index 80ecc390ac4..a0c8974dbd7 100644
--- a/mod/lesson/report.php
+++ b/mod/lesson/report.php
@@ -64,7 +64,8 @@ if (!empty($cm->groupingid)) {
             ORDER BY $sort";
 }
 
-if (! $students = $DB->get_records_sql($sql, $params)) {
+$students = $DB->get_recordset_sql($sql, $params);
+if (!$students->valid()) {
     $nothingtodisplay = true;
 }
 
@@ -83,7 +84,8 @@ if ($action == 'reportoverview') {
 
 $lessonoutput = $PAGE->get_renderer('mod_lesson');
 
-if (! $attempts = $DB->get_records('lesson_attempts', array('lessonid' => $lesson->id), 'timeseen')) {
+$attempts = $DB->get_recordset('lesson_attempts', array('lessonid' => $lesson->id), 'timeseen');
+if (!$attempts->valid()) {
     $nothingtodisplay = true;
 }
 
@@ -221,6 +223,7 @@ if ($action === 'delete') {
                                                                     "userid" => $attempt->userid);
         }
     }
+    $attempts->close();
     // set all the stats variables
     $numofattempts = 0;
     $avescore      = 0;
@@ -306,6 +309,7 @@ if ($action === 'delete') {
             $table->data[] = array($studentname, $attempts, $bestgrade."%");
         }
     }
+    $students->close();
     // print it all out !
     if (has_capability('mod/lesson:edit', $context)) {
         echo  "<form id=\"theform\" method=\"post\" action=\"report.php\">\n
@@ -535,7 +539,7 @@ if ($action === 'delete') {
 
             $table->data[] = array(get_string("notcompleted", "lesson"));
         } else {
-            $user = $students[$userid];
+            $user = $DB->get_record('user', array('id' => $userid));
 
             $gradeinfo = lesson_grade($lesson, $try, $user->id);