I am using a quiz plug in called the "reattempt checker" which doesn't allow a student to take a quiz after he/she passes it. I am currently testing the quizzes on a fake student account and I noticed that the plug in started giving me the wrong response on some of the quizzes, and worked correctly on some others. My guess was that the quiz plug in was giving the wrong feedback since the quizzes with attempts had history which moodle was saving, and it effectively interfered with the plug in. The plug in still malfunctioned after I went in admin and manually deleted the quiz attempt for the specific quiz I was testing.
To test this theory, I made a new fake student account (which had no previous attempts on quizzes) and the plug in worked perfectly. So I know the problem is that the quiz history is still stored, but I cant figure out how to delete that history. I tried "purge all caches" and "reset course" but neither worked. Does anyone know how to delete the quiz history?
Thanks!