I can't forget it. The evil teacher put a box over our hands and keyboard so we couldn't see our fingers. The typing software made a beep every time we made a mistake and summoned the teacher. The exams where timed and every mistake you made in the final copy (you basically had to copy a paper document) cost you a grade.
I still fuck up sometimes today due to sometimes using keyboards with US, DE or Apple layouts but in general I'm quite fast and never need to look at my hands.