Summarize:

(If you're wearing a pullover hoodie, only put your arms in so that the hood is again in the front of your body.
Rip off a piece of paper, maybe about 5" by 5". Write all of the test answers, notes and any other important information on the paper. Tape the cheat-sheet into the hood of your hoodie on the day of the test. Put your hoodie on backwards, so that the hood is in front of you. Look at the paper, easily, whenever needed.