I just took the TEAS for the first time last week, sort of a benchmark attempt to see where I was weak. I scored 84.0%, and was informed by the proctor that it was well over what I would need to get in, so I am leaving well enough alone. The things that stood out to me that I was unprepared for was balancing chemical equations. I haven't taken chemistry since my sophomore year in HS, which was 20 years ago. As far as the math went, FOIL was on there a few times, and order of operations. Everything else was easy, with the exception of forgetting how to speak proper English lol.