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1.
An advanced placement (AP) Calculus course taken in high school. This course features two semesters of college level Calculus, while the previous level available in highschool (Calculus AB) features 1 semester of Calculus 1. Calculus AB is considered a simpler, less in-depth version of Calculus BC.
"Are you taking AP calculus AB next year?"

"No I decided to take AP calculus BC because I want a challenge."
by Bakayaro Konoyaro November 17, 2013