<p>What prep books did you use or were the most helpful for preparing for the AP Calculus AB test?</p>
<p>Use both PR and Barron’s. PR has more of the test-like questions and Barron’s has more of the harder questions. PR is what will get you a 4 and Barron’s will take you from a four to a five. Also, you definitely want to use the FRQs on collegeboard for this exam, because the grading is not subjective the scoring guidelines give you clear-cut answers so you know what you got right and what you got wrong.</p>