I expect a version of this. My students are allowed to retake the quiz as many times as they like up until the deadline. Then th quiz is closed and no more attempts are allowed. But, for each quiz attempt a penalty will be applied to the total for the lastes quiz attempt. First attempt grade = 100% av total for that attempt, second attempt grade = 90% of total for that attempt, third attempt = 80% of total for that attempt, and so on.
I cannot find this function and from the posts in this thread I conclude that it doesn't excist. If I am in err, please advice me.
//Jens