<p>For AP Bio, you can get an easy 5 (with self study or class) just using the Cliffs AP prep book. I’ve noticed Cliffs isn’t that great for any other class, except Bio. You don’t necessarily need the Campbell textbook to score a 5 on Bio… Campbell is really overkill. Probably only half (or less) of that 1000+ page book is needed for the exam. Cliffs = 5 for Bio.</p>
<p>As for AP Chem, I can’t really give any advice because I haven’t taken the class yet. But my brother used barron’s and said it was really good and thorough.</p>