<p>how hard is the real biology SAT test? How hard is it compared to sparknotes, barrons, princeton review tests? I want to know because I'm doing rather badly on the practice tests (not the real one that was released)</p>
<p>barrons is a lot harder; sparknotes is pretty accurate but the curve is harsh, and ive heard that pr is accurate overall.</p>
<p>pr is accurate</p>