It also makes sense to limit Calc AB to seniors because if you take it as a junior, what math course makes sense to follow it? The first semester of Calc BC would be a total repeat of Calc AB, and there isn't an AP course covering second semester calculus only - so you'd either have to enroll in a local college or take it online. Plus most kids (I"m guessing all students really) who are advanced enough in ability to be plugged into pre-calc by the time they are sophomores really ought to be able to handle Calculus BC, and quite a few if not most of them might be bored with the pace of Calc AB.
polarbear
My son will be a junior next year. Regardless of if he takes BC or AB Calculus next year, there is the question of what to take for math senior year. The standard for these students in my district is to either take AP Computer Science or AP Statistics. Not really satisfactory. Most of the juniors who take Calculus takes BC because they are the ones on the fast track. My son fell off the top track because of grades last year and is in regular pre-calc with juniors & seniors. The juniors will mostly take AB Calc next year.
