How accurate are commercial brand books?

<p>So I’m scared to take any more Blue Book practice tests; I’ve already used up 8 out of the 10 practices tests as well as 2 online practice tests and I fear that I’ll run out of CB material to practice from. So right now, as I study, I incorporate newly learned strategies into commercial brand books like Princeton Review and Kaplan. I don’t want to take any blue book practice tests until I’ve learned all possible strategies in math, writing, and critical reading. I get pretty decent results in my PR and Kaplan practice tests, so I’m wondering whether these books give accurate scores?</p>

<p>They are not accurate and inefficient for SAT prep. Don’t use them.</p>

<p>When you say that you have “used up” those tests, does that mean that you can now do all of the problems and you understand the ones that you previously got wrong to the point where you could now teach someone else how to do them? If not, then you have not finished with those tests. And if so, well then I bet you are ready for the real thing! </p>

<p>What I suggest is just reviewing books such as Direct Hits/Ultimate Guide to SAT grammar until you’ve both:
1.) memorized the information given from each book
2.) forgotten most of the test answers/questions from previous Blue Book tests</p>

<p>and then retake them and see improvements</p>