I took the TExES 4-8 generalist exam and couldn't find ANYTHING worth buying to help me prepare for the exam. A friend let me borrow her copy of this book. Even though it is written for those taking the EC-4 generalist exam, it has an EXCELLENT outline of U.S., Texas, and World history. This information helped me remember facts that I had long since forgotten. There was also some information relating to ELA that I found helpful when taking the test. The math and science sections in this book probably won't help you much on the 4-8 test, as those are tested at a much more difficult level than EC-4. I would recommend using 7th/8th grade science and math textbooks to help you study for those portions of the 4-8 test. However, this book is a great resource for SS and ELA!!BTW - I passed my test. :)