We would like it if the students could see the "feedback" parameters of their tests.
Students often (from their own assumptions) expect to see their wrong answers as soon as they take the test. However, because we allow retakes on these tests, we only show the grade, and when the test closes reveal the wrong answers (and never the right answers).
If they could see that the test is intentionally designed this way, they would know what to expect, and it might save the students a lot of frustration/panic.