I feel like this text alone was enough to prepare one to get a 5 on the AP Biology exam. Retrospectively, it is remarkable how easy the curriculum is to master for these course and how much faster they can be done. I have high confidence that without the actual classroom instruction, I would have still been able to get the same score on the AP Bio exam. So it's great they make these books, and I would recommend to ambitious and bright high schoolers with some time to check these books out, prep for certain AP exams without actually taking the course. I was able to do this for at least one course in high school in the late aughts. And if one goes to a state school, credit will be awarded even for scores 3 and above, meaning you can waltz to bachelor's in less than two years easily and then get out with a master's degree of some kind in less than 4 or a professional degree in less than 6.