<p>edit: nevermind found it.</p>
<p>SparkNotes:</a> SAT Subject Test: Biology: Test Center</p>
<p>Go to right-hand side of the page and click on "Your First Practice Test is free".</p>
<p>That's for biology, though. If you need US or something else, just navigate until you get there.</p>
<p>EDIT: Looks like you got there before me!</p>