How accurate are the PR practice chem SAT tests?

<p>I took two practice tests to see how I would do. I scored an 800 on both of them (missed 2 problems on the first one and 1 on the second one because I misread the questions, lol).</p>

<p>How accurate is PR? Is the subject test really that easy because I don't want to get overconfident and blow off test prep, and score worse on the real thing.</p>