<p>College Board does not publish any previous exams.</p>
<p>Barrons is good for Math IIC and there are heaps of practice tests in the book. Its harder than the real thing, but means that on the day you can just breeze thru and get 800 if you are doing OK on the Barron's sample tests.</p>
<p>I'm using Barrons for Chem too, as well as Sparknotes: <a href="http://www.sparknotes.com/testprep/sat2/%5B/url%5D">http://www.sparknotes.com/testprep/sat2/</a>.</p>