In the past week, one more nice plugin is submitted in the Moodle plugins database. This plugin named as “Pass grade quiz access rule” is basically a restriction plugins for the quiz module to prevent students from reattempting the quiz once they achieved the required minimum passing grade set by the teacher.
During the initial settings of the quiz, the teacher can enter a required grade which once achieved will result in no more further attempts i.e. it will restrict the quiz after achieving the minimum specified grade. Read More