I took this exam in Nov. 2005, and I admit it was nerve-racking studying for it. First off I used Princeton Review's CLEP book, which contains a thorough outline of just what to study, topics that can be expected in the exam. I created a study guide of my own with this outline by gathering information from Encarta and Wikipedia on each topic. The entire outline turned out to be over 200 pages in font size 9, a monster. I certainly made it way too long, but since this is such a broad exam I didn't want to "miss" anything.
I then came across a PDF copy of Peterson's CLEP Success book, which I think they became wise to and is no longer available (it was on a military website). This book had concise but adequate outline/guide in each area of the exam; the mock exams, however, I found to be way off the mark when I took the real exam. I don't think Peterson’s outline was sufficient on its own, but combined with taking mock exams from the Princeton Review guide (which has 2 full length exams) and filling in the gaps where I felt unsure by doing extra encyclopedia look-ups, I managed to get a 60. It's not a very high score, but it's a pass/fail so a 50 would've been good enough.
EDIT: I just found a posting on the degreeinfo.com forum that has a link to the Peterson's CLEP Success book and 18 CLEP subject exams: http://www.petersons.com/airforce/clepce...sponsor=8.
I then came across a PDF copy of Peterson's CLEP Success book, which I think they became wise to and is no longer available (it was on a military website). This book had concise but adequate outline/guide in each area of the exam; the mock exams, however, I found to be way off the mark when I took the real exam. I don't think Peterson’s outline was sufficient on its own, but combined with taking mock exams from the Princeton Review guide (which has 2 full length exams) and filling in the gaps where I felt unsure by doing extra encyclopedia look-ups, I managed to get a 60. It's not a very high score, but it's a pass/fail so a 50 would've been good enough.
EDIT: I just found a posting on the degreeinfo.com forum that has a link to the Peterson's CLEP Success book and 18 CLEP subject exams: http://www.petersons.com/airforce/clepce...sponsor=8.