<p>If you re-take the class at Cal, do you still get unit credit for the AP exam? My S is thinking about re-taking one or two of his AP math/science courses to make sure he really "gets it" at the college level before advancing. It makes sense to me not to give him Cal credit for both the AP class and the Cal class, but would he still get unassigned credit...or something? I'm obviously confused...</p>