just cheat...

I didn't do it on my important exams (Abitur), but most of my friends did, even though they could be excluded from the exams for ~3 years if they get caught.
Yet it seemed like noone of the teachers cares about what you do... i could have gone to the toilet 3 times and hide a sheet of paper in my socks and read it there.
Man there were people who threw papers at each other when the teacher wasn't looking and those papers had the answers written on it, of course.