I have not been able to get my arms around when to use "test", "interrogation", "contrôle", or "examen". I gather that "examen" is for a more comprehensive test or a performance assessment, like a driving test, but the usage doesn't seem consistent. Terms like "Examen finale", "quiz pop" & "mi-parcours" are pretty easy to figure out because they're so specific, but the more generic "test" situation is a little unclear.
Ça m'a rendu fou !