This is utterly derailing the main topic of conversation, but...
I know that a lot of mathematicians dislike AP Calculus. The original thinking was that Calculus couldn't be taught to highschoolers, so you waited until University to take it. Aspiring mathematicians would take a rigorous, proof-based Caclulus course, which would prepare them to tackle harder subjects in the future. Everyone else (engineers, chemists, physicists, etc.) would take a more general/applied course. Now, all but a handful of universities offer such courses, under the assumption that anyone who wants to be a mathematician has surely taken AP Caclulus. So the idea of proof-based Calc. for future mathematicians has been lost in transition, and the end result is that you have kids hitting Multivariate Calculus and Differential Equations who haven't seen a proof in their lives.
The current AP Calculus courses are 99% computation. I was challenged while working through Spviak's book with no teacher guidance in highschool, but I scored a perfect 5 on the AP test with little effort.