I just wanted to let you know that I barely passed a practice test for 4-8 Generalist. That disturbed me, since I only had five days before the actual test. I ordered your study guide and was only able to prioritize the areas which were the weakest for me on the practice test, Science and Mathematics. I got a 285 on the test! Thanks to your material, I go 28 of of 28 math problems correct and 25 out of 27 science problems correct! Thank you for this fantastic guide and for your excellent customer service when I could not download the ebook.