How to get it?

So I’m having some trouble getting the full A in Bio courses. I’ll either get an A- or a B+. But was wondering how to really get that A? How do all of you do it? I average low A’s and high B's on the exams and do decently well overall in the coursework, but I always come up short with an A- or a B+ or something. I know it's not a big deal, B's and A-s won't be what keep me out of medical school but I really feel like I can reach my full potential. Don't know what it is I am doing wrong... How to get it?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums