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This, I suspect, is exactly why my high school chose to require a 2-year Calc sequence. And it is indeed required; the only way to skip Calc AB is to pass a final exam for the course. The BC course assumes that students have already taken AB, and starts with “C” calculus after a bit of review. But both classes end a full month before the AP test, and a LOT of time is put into reviewing for the exam. (It was an excellent foundation, especially for “good but not great” math students like myself.)</p>
<p>My high school did offer MV calculus through the state U (which sent a professor to the school), but tuition was paid by the student, not the school. The pre-calc integrated sequence, contrary to calc, is designed to be accelerated, so plenty of people did get to MV calc by senior year.</p>