How accurate are the Sparknotes SAT II Bio Practice Tests?

<p>I've been using PR and the free online Sparknotes book/tests.</p>

<p>On the sparknotes free practice tests, I've been consistently getting 660s-ish (tests 2-4 were all 650 and 660, despite extensive studying in between tests -__-). It seems to me that apart from genetics, the subject areas really vary :/. And the last (fifth) one just kinda killed me, got a 600 even.</p>

<p>It really makes me wonder how accurate it is. For both PR and Sparknotes, the practice tests were also pretty different in terms of content.</p>

<p>Some feedback on this would be great =).</p>

<p>sparknotes was accurate for me.</p>

<p>I agree. Sparknotes was very accurate, and the study materials were very helpful, for me.</p>