<p>I have the same issue – I have 21 AP credits and would like to avoid becoming a U1. I really wanted to take a few AP tests this year, but am concerned about doing so now. Plus, at least one of my AP tests that I have already reported to McGill (listed it on my app) is in a subject that is one of the required courses in my major, and I would really like to take it at McGill. Am I correct that I can only take it for no credit?</p>