Do not buy this book if you are looking for a guide to prepare for the ACT...this is because the book only has about 15 pages of review per test. So, if you need a review book, I suggest that you go to the Princeton Review book, which does a pretty good job.

However, if you have used up all the practice tests in the book that you are currently using, then I strongly reccommend this book. The book offers four practice tests (even though the cover says it offers two tests.) Each answer is fully explained, which makes the tests a lot better than the other books.

So, if you need review, don't add this book to your cart. If you need more tests, this book is a very good source.

In preparation for the ACT, I have studied the Cliffestestprep ACT book closely. And in the process, I have seen MISTAKES in the answers.

On page 33, "5 x 4=25".
on page 159, question #11 on practice test2, the answers are mistakenly copied from question #10...so the answers don't make any sense for question #11!

These are just two mistakes that I've seen, but judging winded and confusing explanations for problems you don't even need to know for the actual ACT. I'm sure you can find more consice explanations in other resources. In short, this is not the best choice for getting ready for the ACT.

UPDATE: I recently checked out Princeton Review's CRACKING THE ACT 2002; I highly recommend it for great strategies, tips, and practice material. I also recommend GETTING INTO THE ACT, which is the only review book sponsored length ACT tests from a few years back;thus, you get familiar with the format of the test and its degree of difficulty. These two books should be all you need to prepare...going through these books..I realized just how useless CliffsTestPrep ACT was.

I am a guidance counselor and have used this book to help students prepare for the ACT. I like how the book lets you take practice tests, a little at a time, if you choose. Then helps you analyze your mistakes: were they lack of knowledge or careless mistakes? Then you can analzye your careless mistakes and learn to avoid them. After having a workshop with seniors using this book, one of the girls raised her reading score from 18 to 29. As with all books, you have to READ it, STUDY it, and APPLY it, if you want results.