Founded in 1992 as Breakthrough Cambridge, Breakthrough Greater Boston (BTGB) transforms urban education for students and teachers at two sites - Boston and Cambridge. Through six years of intensive, out of school time (OST) programming, Breakthrough changes students' academic trajectories and supports them along the path to four-year college. Simultaneously, Breakthrough builds careers in education through an unparalleled teacher training program for college-aged students that features competitive national recruitment, research-based training, and daily coaching from master teachers. Breakthrough's unique Students Teaching Students model inspires college students to become the next generation of urban educators and students to become college graduates.