<p>Ok, this year I'll be taking AP Biology and AP World History (with a horrible teacher for World) I want to take the SAT II bio exam but am confused about the world history SAT II exam. I heard it's pretty hard and don;t know if I should take it, especially with a bad teacher. So should I take US History, which more people take or World History?</p>
<p>Which books should I use for each?</p>