<p>I've been in a calculus class all year at my school, and I have one of the highest grades in the class. But I have now been trying to prep specifically for the AP, and I'm getting really worried. I did some of the Free Response questions from previous tests and can only get about a third of the questions right. The other third I have about a halfway sense of what to do, and the last third I have absolutely no idea what to do because I never learned it. </p>
<p>Does anyone have any recommendations? I don't really want to go through a prep book because I've already bought so many books for everything else, plus I think it may be useless because I feel like I've covered a lot in class (although apparently not).</p>
<p>I'm getting worried. Any advice?</p>