I've never understood this mentality. If you cram 'til the last minute, you can rely on information in your long-term memory and your short-term memory. I always do much better on a test if I enter the test in the mindframe of the subject--it helps wake up all of the relevant mental machineray, so you don't need to wait for the engine to warm up before you start cranking and firing. It makes you more tired by the end of the day, but I can't imagine remembering all of the random-ass conventions for chemistry for a week or more. I say focus on comprehension of material in the prereq classes, and cram your brain with facts and conventions immediately prior to the test. 👍 👍 👍