I am teaching a university maths module, which is currently taken by approximately 300 undergraduates. By the way, I am teaching in Asia.
Due to the number of undergraduates, tutorial classes are conducted from Monday to Thursday. There comes the problem:
This course consists of 2 in-tutorial quizzes. The quizzes are set very similarly so that the level of difficulty is consistent. However, due to the similarity of question, students from Tuesday, Wednesday and Thursday classes can obtain quiz questions and keep practising them. In the end, these students excel while students from Monday do averagely or poorly.
Question: How to deal with this kind of situation? A few solution that I can come out with is to have a mid-term, where everyone sits in a lecture hall.
Another way is to set different questions each day. However, this method does not guarantee the level of difficulty is consistent throughout all tutorial classes.
The last way, which I don't prefer, is to set assignment. However, students tend to copy each other and t defeats the purpose of assignment.