The Advanced Placement (AP) Calculus AB exam assesses how well a student has mastered the concepts and techniques of differential and integral calculus. The indicator value is defined as the percentage of U.S. public high school graduates who have scored 3 or higher on the AP Calculus AB exam during their high school career and is a subset of S-13, Public High School Students Scoring 3 or Higher on at Least One Advanced Placement Exam.