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<p>Not what I meant.</p>
<p>School A might, for example, offer a good quality AP calculus AB course, while an elite HS may offer that, a good quality AP calculus BC course, and perhaps more advanced math courses of good quality.</p>
<p>A good, but not great, student in math may be capable of handling AP calculus AB in high school, but not a faster paced AP calculus BC course or more advanced math courses that are available at the elite HS. Such a student may not find any curriculum advantage in math by going to the elite HS. Other subjects could be analogous.</p>
<p>(Meanwhile, School B, if it offers AP calculus AB at all, would be offering a low quality course, after which most of the students score 1 on the AP test even if they got A grades in the course.)</p>