<p>I only used Barron’s, studied for ten days (having covering 15 chapters in Campbell’s for AP Bio), and think I got 1-3 wrong. Barron’s does a great job.</p>
<p>Well, I’m currently in AP Biology, but my class has a number of stupid and disruptive people, so the learning and teaching rate hasn’t been as quick as it should be. I took the test yesterday after going through the Barron’s review book for a number of weeks before the test. Honestly, I had little trouble with the test and felt fully prepared to answer everything (which I did). The E/M choice is up to you. Although I will mention that E covers evolution, taxonomy, physiology, and ecology, and could be a bit easier than M.</p>