<p>I found the current curriculum guide for my old high school.</p>
<p>They offer a lot more AP courses now compared to back when I was a student there.</p>
<p>For calculus, they now offer three possible courses:</p>
<p>Calculus (students not expected to take AP tests, presumably for non-honors-math students who are one year ahead)
AP Calculus AB
AP Calculus BC</p>
<p>Each is a one year course. The listed prerequisite for either AP course is a a sufficiently high grade in honors precalculus or a higher grade in regular precalculus. In other words, a student who is good at math can take AP Calculus BC in one year and learn calculus at the same pace as a university freshman taking calculus. This is different from, and makes more sense than, the apparently common practice reported here of making students take AP Calculus AB one year before taking AP Calculus BC the next year.</p>