I self-studied precalc during my sophomore year and following summer. Then, since math didn't fit into my junior year schedule, I am taking AP Calc BC online through OSU. Depending on what I get on the exam, (4 or 5) I will either take calc 3 at a community, but if I get a 3 or lower, I was thinking about retaking Calc BC, the option most seniors in our school take, at my school. Will this look bad, when I applied to college. BTW, I want to go into engineering.