Since the end of the school year is almost here, obvi you're going to have to do some (I'm sorry!) Cumulative Exams. Anyways, here's an AWESOME tip so hopefully you guys get some decent-great grades. For your subject's cumulative exam, go through EVERY SINGLE QUIZ in that course. Go through the ones you got right and figure out the ones you got wrong. You can memorize some answers, but it's not a guarantee it'll be on the exam. Anyways, relearn the ways of each lesson and each thing you got "taught". Study those quiz answers CONSTANTLY. If you have to take multiple exams in one day, accelerate your amount of work until you cut it down to one exam a day (or if you're really feeling for some pressure and stress, two a day.) Get some good rest the night before and eat a good breakfast. I know these two tips seem lame or whatever, but they really work. :)
GOOD LUCK PEOPLE