<p>Hey guys, I am going to take these AP classes next year and I am going to use these prep books. Are these prep books good enough to earn a 4 or 5 on the AP test? I like prep books that are descriptive and I don't mind if it is really long. </p>
<p>AP Psychology: Barron's
AP English Language and Composition: Cliffnotes
AP Biology: Cliffnotes
AP US History: AMSCO or REA or DH </p>