The call from Lincoln High School’s principal’s office came unexpectedly, as they often do. Cedrick Argueta’s friends joked that he might be in trouble. Cedrick didn’t think so. He was right. It turned out that Cedrick, the son of a Salvadoran maintenance worker and a Filipina nurse, had scored perfectly on his Advanced Placement Calculus exam. Of the 302,531 students to take the notoriously mind-crushing test, he was one of only 12 to earn every single point.