<p>Well for SAT I, the Blue Book by Collegeboard is very useful; however, for SAT subject tests, I heard that the official one only contains 1 test per subject, which essentially makes the book useless.</p>
<p>So which books are the best for practice tests? I've already read Barron's for Math and PR for learning chemistry and physics</p>
<p>Okay. There are official SAT II Subject Test books that are more specific. I think you’re getting confused with the Official Study Guide for the SAT II: Subject Tests (or something along those lines). They have like specific official review books for World History + US History, Math II, Math I, etc.</p>