I would like to be able to set a maximum score possible on test retakes. If a student takes a test once and fails, then requests a retake, I'd like to set the maximum possible score to something like maybe 75% or 80%. The first time the student took the test, they discovered exactly what the questions would be, and this gives that student an unfair advantage over the other students. I'm thinking particularly of a weekly Greek vocabulary test I give (though I can see this being useful for other types of tests, too). On the vocab tests, the students have a large number of possible words to study, but only 20 words selected for the test. They don't know which 20 will appear on the test until they take it. Setting the maximum possible score gives the student who achieved a failing grade the opportunity to improve their score, but not to get 100%.
Maximum score on test retake