<p>I've heard amazing things about AMSCO for US History... any other recommendations?</p>
<p>for SAT Subject Biology use PR. it's amazing. a least 5 of the questions on the real test was similar to the ones in the practice (although the 2nd practice test is a little hard)</p>
<p>for AP use Cliffs.</p>
<p>i'd say more about half of the may bio test was similar to PR.</p>
<p>Bio-PR
US Hist-AMSCO
Lit-Kaplan</p>
<p>Those are actually the three tests that I took and all three prep books seem to have prepared me very well for their respective exams.</p>
<p>I took Lit and Bio in June, so I don't know my scores yet, but I'm convinced that AMSCO+my APUSH class got me an 800.</p>
<p>AMSCO is magical.</p>
<p>Princeton Review for biology.</p>
<p>Barrons is good for US History; but it's pretty long, so make sure you have time to read it (if you buy it).</p>