What Organization’s test are you taking? If you are taking PADI’s, the test isn’t hard.. (I haven’t done NAUI or any other) Watch the DVD and do the book work that’s in the book and you’ll do fine. You get scrap paper to do your equations on, remember your formulas and write them down just as soon as you get your scrap paper. Then, you can concentrate on the test and not on remembering the formulas. Like any other test, you should have to get 70-75% to pass.
Dale