<p>I am looking to buy a prep book for the AP Environmental Science exam. I am not sure which book to purchase - Princeton Review - Cracking, Barrons, REA, Kaplan, or Smartypants. I am in an unique situation as I am taking the class at two separate schools this year. I am taking a semester away. I need a book that will cover all the material in case something is missed between the two schools. Thanks!</p>
<p>The PR book is pretty good. I dont have any experiencewith the other ones.</p>
<p>The barrons one looks pretty good, thought i havent gotten that deep into it, however it is extremly in depth and textbook-like so i doubt you will miss anything (and the book is like more then 600 pages..)</p>