<p>Since OP feels shaky about this math skills and is getting a B in AP calc AB, it’s a good idea to retake Calculus. Most of it will be a review, certainly, but it’ll ensure his knowledge is A-Level for the next class.</p>
<p>I agree. If anything, it may end up being an easier A which can help with the overall GPA. Retaking Cal I may not really help much with Cal II, but it should with Cal III.</p>