The amount of typographical errors is truly astounding for a book that has passed through 9 editions. The answer keys have so many errors that the book is of dubious merit. If the student realizes the answer the book gives is wrong then hopefully s/he has the means to find the right answer. Otherwise, the student is just left insecure, frustrated, or mislead. Upon what survey do they make their claim that this is such a popular book???

The editors really, really need to proof read their text better - it is literally embarrassing. The current level is not competent enough to be deemed professionally done.

If this book is representative, would I trust them for further books like SAT Preparation? They must do better than this to be competitive.

I bought it because it was the best bestseller among its kind.
It has a lot of typos. The book is not well organized.

This book reminded me of the biographies on Roberto Clemente and Teddy Roosevelt that I used to pick up in elementary school, but with slightly more technical subject matter. There are some interesting stories about Delbruck's life and discoveries, but these are written in a juvenile manner and the book does not live up to its title - very little discussion of the impact of molecular biology on other scientific fields or society in general is provided. The important experiments of Delbruck, Luria, and others are also described poorly. There are much better books on the origins of molecular biology. For some fun, hagiographic info on Delbruck this might work - for anything more, it won't.

This program is not worth it. It is not very easy to understand and I stayed confused. The GED books are better.

Very disappointing. Many wrong answers. Tried to use this to tutor a student...disasterous! DON'T BOTHER BUYING THIS!

Hi Ihave being looking for this book like crazy,I had the book but I let my friend take it to her work pleace to get some copies and from then I never see it again I like the book and I think is very convinient for pepole like me thath work and never have time to go take classes. Thank you

Maria Ramirez

I recently coached a group of eighth-grade students on how to take standardized tests, including the COOP. Their school had instructed them to buy this book, so we began by using it as a reference and workbook. We quickly discovered that the book was filled with poorly written exercises, obviously wrong answers, and systematic labeling errors. Please do not buy this book! It is so badly written that it may actually do more harm than good, and the authors should be ashamed of foisting such a flawed work on unsuspecting students. If you're going to take the COOP, there is a perfectly serviceable book, published by ARCO, that we found to be a much better resource.

This book might give you good practice on high school entrance exams, but the careless mistakes make it frustrating to get through even one subtest! They don't even know their alphabet! This is the first book I have seen which has a language test with the options (A), (B), (D), and (D)! It is an outrage to know how poorly this book has been put together. In the long run, it will teach your child to learn a thing or two about entrance exams, but please, if you have other books to choose from, choose another one!

I bought this book... as it is my intention to buy a replacement for it as soon as possible.
I have taken all of the GED pretests in this book. That is where I am going to stop. Along with errors, it is my opinion that the passages they give you to read from often do not give ample detail for the questions afterward, and in a few cases none at all. I will give examples upon request via e-mail if anyone would like.
I read approximately 500 pages a week as a pastime, and have been a writer for 13 years- I just didn't get my high school diploma. I still scored well on these tests, as well as can be expected, but have scored significantly higher on other books. I believe this is due to others having questions that better pertain to the information given.