Yes, I vaguely remember during high school, that there were some persons who were involved in an epidemic of cheating, they would make these little cribe sheets and cheat sheets with the answers to the test written in miniature lettering, and hide them up their sleeves or wherever they could sneak a look without the teacher noticing, although there were times that the teacher did notice that and they got called to detention and who knows what other punishment. Of course I never did that. Never.
