<p>I don’t think it’d make a noticeable difference whether many people take it in December or not…</p>
<p>FWIW, my school recommends taking it June of junior year and then fall of senior year. I took it June (as a junior) and thought it went well because I was basically done with school work and had loads of free time to study.</p>
<p>Look at your calendar and see when you have time to prep/practice for it. If you have time in late May or early June, take it in June. If you have time in August/Sept, take it in Oct. Will you have the time and the motivation to get some work in by December?</p>
<p>My IB full diploma son took the SAT in March of junior year, then retook in June. He had time to prepare for March, but wanted to retake to see if he could raise his CR score to PSAT levels. Did <em>not</em> have time to prepare for June (those lovely IBs, APs and SAT-II), but raised his score 90 points exactly in the places he wanted them. </p>
<p>You are <em>wise</em> to want to avoid SAT/ACT/SAT-II testing in senior year with IB. It is a totally pressure-packed, work-filled fall, not counting applications, sports, or ECs. </p>
<p>A thought: if most of the schools to which you are applying superscore, I would focus on the CR section. You are already at 700+ in the other two; these scores probably reflects the more advanced courses you are now taking vs. last year. Doing some focused work could get your CR to 700, at which point your superscore is 2140. If your essay score is weak, work on some practice essays. If the Writing MC is nailing you, go over the grammar rules in a SAT prep book. A 740 math generally means you missed three questions, depending on the curve. Not sure I’d go crazy spending a lot of time trying to improve by only a couple of answers. OTOH, diligence on CR and W could yield real fruit.</p>
<p>If you have classes for which you are going to take an SAT-II and are currently taking the class (USH, Pre-Calc, foreign lang, science), you will want to take those in May or June when the classes finish and the material is fresh in your mind. </p>
<p>Whether or not another 100 points on your SAT matters, though, really depends on your goals. Is a megareach worth it if it means you’ll struggle for four years? Are you looking for merit $$? There are plenty of excellent schools who will be delighted to admit you with a 2070 and decent GPA, and some of them would even give you $$.</p>