Summarize the following:
Hide your notes in your sleeve. Never totally remove the paper from you sleeve. Only pull out enough to reveal the information you need. This method is much easier if you are near the back of the class.

Summary:
Write all of the test answers, notes and any other important information on a piece of paper. On the test day, wear a long-sleeved shirt or hoodie. Slowly and silently slide the piece of paper bit by bit out of your sleeve.