As soon as Darnell Boursiquot hits the hallways of a Florida middle school, he’s mobbed by starstruck teenagers. When he steps into a classroom, Sharpie-wielding students line up to ask for autographs ...

Photo: Tabtor Math The fifth-grader who just last year was at least one grade behind in math is now a year ahead and helping his classmates. Sebastian Johnson’s grasp and meteoric understanding of ...