I was always naturally good at algebra and stuff. I was frequently ahead of my class, got special classwork from at a couple teachers to keep me occupied, and was one of a handful put in a pre-calc course in highschool. I did well at chemistry (except naming in ochem). I did poorly at geometry and biology which were both heavy on visuals and memorization. I was hit-or-miss in history because I could memorize the stuff I actually found interesting, at least.