I took the bio CLEP test a few years ago. It wasn't bad. I used the free videos on Hippocampus.org: HippoCampus Biology - Homework and Study Help - Free help with your Biology homework
I also referred to this study guide: http://www.amazon.com/CLEP-Biology-R...s=clep+biology
A newer edition is available. Really, though, any basic biology text--in my opinion, the shorter the better--can help prepare you for the exam. Other free science videos and lectures abound on the Internet as well. Youtube is great. I would go with whatever format/source resonates with you.
Last edit by 777RN on Jul 1, '12
: Reason: spacing