Son of maintenance worker gets perfect score on AP Calculus exam -- 1 of 12 in the world to do so

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11. This teenager is one of 12 students in the world who aced the AP Calculus exam

Grade Point

This teenager is one of 12 students in the world who aced the AP Calculus exam

By Nick Anderson February 10
@wpnick



Landon Labuskes, in a classroom at Paul VI Catholic High School in Fairfax, Va. (Photo by Dayna Smith/For the Washington Post)

Of the 302,532 students who took an Advanced Placement test to gauge their performance in college-level calculus last May, exactly 66,045 got the highest grade on the exam’s 5-point scale. To score a 5 is a notable accomplishment.

But just 12 students worldwide managed an extremely rare feat: They aced the AP exam known as Calculus AB, getting every answer correct on a test lasting 3 hours and 15 minutes, with 45 multiple-choice questions and six in a free-response format. They represent 0.004 percent of last year’s test takers, who were mostly high school juniors and seniors.

Meet one of this elite dozen: Landon Labuskes of Aldie, Va. He’s 15 now, a junior at Paul VI Catholic High School in Fairfax, but he was 14 and a sophomore when he took the exam.
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Originally from Harford County, Md., Landon is the younger of two sons in his family. His parents are business executives. At school he is involved in model United Nations and model judiciary programs. He said he is an Eagle scout and aims one day to be an aerospace engineer.