<p>Is it possible to retake a class I have claimed credit for if I change my mind? Or will it count as your second attempt at a class or something? Has anyone done this?</p>
<p>The simple answer is no. The system if very rigid. For example, you are required to take mechanical physics before electricity and magnetism (e&m). These classes are offered in several forms. If you were to claim credit for the harder calculus-based mechanics then decided you didn’t like calculus, you would be unable to take the non-calculus based e&m because you do not have the exact pre-requisite (non-calculus mechanics) despite your mechanics credit having been more difficult to earn.
For this reason among others (i.e. rebates), claiming AP credit is a process that should be done with the advice of your adviser. If you are worried about claiming a credit for a subject you are still uneasy with, you’re probably better off re-taking the class. On the other hand, if you feel that you earned a solid ‘5’ on your exam then you should be just fine and shouldn’t second guess yourself.</p>