Toilet Tank Method

Note: This must be prepared beforehand.

1. Go to the toilet, and choose a specific stall. One that you're sure you'll remember.
2. Go inside, lock the door, and open the top for the toilet tank. Usually, the water level doesn't fill the tank all the way, so use that dry space to tape your notes to.
3. Ask to go to the bathroom during the exam, after you've finished doing all the questions you know. If you're not allowed, accept it. Someone can escort you to the bathroom if needed.
4. Go into the stall you chose, lock the door, and take a look at the notes. Try not to make much noise if there are other people in the bathroom.
5. Flush when you're done, to make it sound real, and go back and write down the rest of the test.
6. Go back to the stall after the exam to destroy the evidence.