This review is based on the Comparative Government data as I used another book for my US government studies.I'm extremely dissapointed with the summaries. Many times, the political institutions are left out, for example. Yet, questions are asked about these institutions in the review questions following the chapters. It appears you are given a lot of information on topics you need to know the least and less on what you need to know the most. The author seriously takes a "this is just a review" approach. I used The Princeton Review for my AP US studies last year and received a four. This year for AP US Government I used to Princeton Review and I'm pretty confident. I suggest you go with them or another book with good summaries. Sadly with Comparative, you may be limited.