This book literally has everything you need to get a 5. It's well organized into sections for certain periods, then subsections for countries or movements. I had a great teacher, but my school had block schedule, so I had to go months before I took the exam. I read this book & looked over my notes (didn't even use the textbook), and presto!

My Physics B class covered some topics in excruciating detail but left some by the wayside, so I had to fill in the gaps. The old book had enough to get me a 5, but it may not have been enough if I hadn’t known some details already. My concern was that because the book tried to cover 3 tests in 1 (B, C Mech, & C E&M), it wasn’t thorough. Now that they’re split up, I think it’d be a strong review.

The flip-side of the Princeton Review (PR) book: great information (almost like a concise textbook) with great explanations, but it's skimpy on the practice questions.

It's a bit on the long side, but it has everything you need for a 5. It's also a great course companion and even serves as a textbook alternative. Major flaw: no answer key to practice, but just search the answers online and you'll probably learn even more. Also, forgive me, Amazon, but it's available for $16.50 through the publisher's website, AMSCO School Publications, Inc., item # R 785 P.

Like a lot of PR books, if anything, it errs on not enough depth, but it's still a solid review. However, I've heard that Economics for Dummies offers an incredibly high quality review, and even though it's not catered towards the AP exam (so it has no practice questions, test strategies, etc.), it's still good info.

I don't have a clear favorite for AP World, but if I had to pick one, I'd probably go with Barron's. However, it's long and has a little too much info that will bog you down. An alternative is PR, but they're a little too simple and don't go far enough. I wish that there was a happy medium between the two, but since there's not, go with Barron's.

This isn't an AP test prep book, but it's a good overview of art history for, well, AP Art History, according to a buddy of mine who decided to take the exam without a class. It's Euro-centric, but heck, so is everything in this country, and although it isn't catered towards AP (so you'll have to do your own College Board research to find out about the test), it's a great resource for the exam.

Well, they're all not so great, but this book is probably the best of the worst. It's a difficult subject to write a test prep book on (the tests can be really random sometimes), but this one tried, and while the review is good enough, especially alongside a textbook, the sample questions aren't wonderful.