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<p>It is not necessarily “much more” (although there may be a few extra topics, depending on the school), but that college calculus courses may have more difficult exam problems, as well as typical college expectations even if the exact same material is covered. Such typical college expectations include much higher student self-motivation with much less hand-holding than in high school, as well as college calculus (and more advanced math) courses covering material at a much faster pace than high school calculus AB (or a high school calculus BC course that assumes previous completion of AB).</p>
<p>Students with AP calculus credit should try the old final exams from calculus courses of the college they matriculate to in order to determine the best placement if they want to take more advanced math courses.</p>