Michael Landsbaum hit bottom after his father lost his job and couldn’t pay rent, leaving the teenager homeless in Dallas. He slept on friends’ couches for months until he was rescued by an unlikely source: his high school. But Pathways in Technology Early College High School did much more than provide him with a place to stay at a counselor’s home. Its accelerated program, including college courses, gave Landsbaum the drive to get through the tough times and the hope for better days. “My goal was to get my associate’s degree, and when I got that, things got a whole lot easier,” he says. Landsbaum, 20, is finishing his bachelor’s in computer science at the University of North Texas—a turnaround that’s typical of the school, part of a growing movement better known by its acronym P-TECH. Founded in 2011 by IBM and the Bloomberg administration in New York City, P-TECH …