Hidden art: the memory dump

Scenario: you study regularly, you know the subject, but you are a horrible test taker. And before you know it, here comes another. Well, YOU can be helped!! There is away to make sure you forget almost nothing you studied for a test. This technique is called the "Memory Dump". Few teachers tell you about this trick but it's TOTALLY LEGAL! Only two stipulations exist in this case. First, you must know the subject matter by the time you receive the test (or something on it anyway). Second, you must be allowed to have a scrap sheet of paper during the test (who doesn't allow that?).
This trick is simple. Let you teacher give you the test, and simply leave it alone. Once you receive your test and scrap sheet of paper, take the scrap sheet of paper and write down EVERYTHING you know relevant to the test. Make sure you don't take too long on this however in case your time to take the test is limited. And there ya have it. Instant reference sheet. Legal as long as you do it AFTER you get your test.
Note: this doesn't save anyone who doesn't know squat before the test.