When Matthew Cheung walked into his AP Calculus AB exam room last May, he was confident. He was one of the top students in his class and had just aced the class final, which is based off the AP exam.
The 18-year-old wasn't surprised when he got his score back: a 5, the highest score one can receive on the exam.
But, what he didn't see coming was that he would be 1 of 12 students in the world to get a perfect score.
Matthew didn't even find out about what he had accomplished until more than 7 months later, when the Davis Senior High School Principal received a letter from the College Board and posted it on Instagram.
Matthew isn't big on social media. He actually found out about his accomplishment from his friends and teammates.