It seems that grades are saved with two decimal points of precision w…

…hile

they are being retrieved as integers. Changed it to two decimals everywhere
and continuing to go about it...

mod/quiz/locallib.php

@@ -1444,35 +1444,35 @@ function quiz_get_best_grade($quizid, $userid) {
         return NULL;
     }
 
-    return (round($grade->grade));
+    return (round($grade->grade, 2));
 }
 
 function quiz_save_best_grade($quiz, $userid) {
 /// Calculates the best grade out of all attempts at a quiz for a user,
 /// and then saves that grade in the quiz_grades table.
 
     if (!$attempts = quiz_get_user_attempts($quiz->id, $userid)) {
-        notify("Could not find any user attempts");
+        notify('Could not find any user attempts');
         return false;
     }
 
     $bestgrade = quiz_calculate_best_grade($quiz, $attempts);
     $bestgrade = (($bestgrade / $quiz->sumgrades) * $quiz->grade);
 
-    if ($grade = get_record("quiz_grades", "quiz", $quiz->id, "userid", $userid)) {
+    if ($grade = get_record('quiz_grades', 'quiz', $quiz->id, 'userid', $userid)) {
         $grade->grade = round($bestgrade, 2);
         $grade->timemodified = time();
-        if (!update_record("quiz_grades", $grade)) {
-            notify("Could not update best grade");
+        if (!update_record('quiz_grades', $grade)) {
+            notify('Could not update best grade');
             return false;
         }
     } else {
         $grade->quiz = $quiz->id;
         $grade->userid = $userid;
         $grade->grade = round($bestgrade, 2);
         $grade->timemodified = time();
-        if (!insert_record("quiz_grades", $grade)) {
-            notify("Could not insert new best grade");
+        if (!insert_record('quiz_grades', $grade)) {
+            notify('Could not insert new best grade');
             return false;
         }
     }