You can't beat the Princeton Review exam books for preparing for these AP exams. It has 2 full-length practice tests plus numerous questions to help your student ace the exams. My son used this book extensively for his US Gov & Politics exam and came home saying "It wasn't that hard!" Now, we all know these AP exams can be deadly difficult, so to hear my son saying he did well showed me this book was a great help. And he's just been accepted to USC (University of Southern California), so all that hard work with these terrific test prep books paid off!