<p>Will your son have any AP exams in May? If so, it may be too much to also take the SAT that month (which typically falls on the Saturday between the AP exams).</p>
<p>There are earlier SAT exams and also a June exam (I think that’s the last test before Sept).</p>
<p>Also get the ACT prep book…it’s called The Real ACT Prep Guide…available at the test website or at Amazon or at bookstores. The ACT test is different from the SAT so an SAT prep book isn’t enough. The ACT has a Science Reasoning section, which isn’t really “science” per se, but looking at charts and answering questions and such.</p>