Could someone please explain how the selective enrollment's scoring rubric works for the Exam portion? I believe there are 72 or 75 questions on the AC test. How much does each incorrect answer drop one's score? I'm confused by the "Know Your Score" section on selectiveprep.com. If I input straight A's, 99th percentiles, Tier 4, it tells me I'd need 99.865 for rank mean and 99.018 for Tier mean for Whitney Young's AC. Yikes. I know it is competitive, but if the required score is in the 99s--about how many can they get wrong? One, two?