Amazing game, it's very polished and really nicely put together and it has one of the best implementations of the theme. Only criticism I have is that I feel it's not that obvious why you got caught at times, I suppose the idea is that throw the cheat sheet or copy when both teachers are facing away from the one with the cheats, that's how I practically beated this game, but one time I was going to throw the cheat sheet and both teachers were facing away and suddenly game over, idk if it was for that split second that I threw the paper one of the teachers suddenly turned around and caught me or if there was something else. Also another time I missed my throw and all I got was a exclamation mark from one of the teachers and nothing else, idk if that's a bug or if there are some sort of error margin.
Besides that, the game is really good with a very engaging and polished gameplay. Good job!