What to Order for Nursing School Success

Disclaimer **I'm putting in a hell of a lot of work on my own, so don't go accusing me of not studying, reading, or pulling my own weight. :)**I just had my first two tests for this semester, and I did not do as well as I should have. I am putting in A work and getting B's. I did well last semester, but I can't play around, I need to know what to order to help me do exceptionally well in nursing school because I'm looking at med schools after this so my grades need to be top notch. I get the best feedback from my peers and professors in the clinical settings, so I'm not incompetent. It's just taking these damn tests that get me tripped up. Please help.