I would say that the single most important conclusion I reached, after traveling through Japan, as well as countless hours reading, studying, and analyzing this fascinating culture, is that you should always tighten the cap on the shampoo bottle before you put it in your suitcase.
Passing the SAT: My personal theory is that it has to do with how much money you send them in the mail. I think the amounts they tell you to send are actually just suggested minimum donations - if you get my drift.