At times, school can be very boring and you have to find different ways to entertain yourself without making any distraction. I am a big fan of doodling. If you open one of my notebooks they are filled with doodles. Drawings of food when i'm hungry, or trees and clouds, or even just squiggly lines. I once saw something online that was a game, kind of similar to bingo, where you cross out boxes when one of them occurs in class. For example, someone falling asleep, or the teacher saying a specific thing, etc.. You could even make your own version of this game to make it applicable to different kinds of classes. If you Google "what to do in class when you're bored" a million things pop up and it is rather entertaining to read some of these. I could never image myself actually doing what others have done in a class when they were bored.