It’s been three years since Tennessee implemented the Achievement School District (ASD), a statewide district to turnaround the state’s lowest-performing schools by pulling individual schools under state control. In 2015–16, 29 ASD schools—27 in Memphis and two in Nashville—will serve more than 10,000 students. The Achievement School District: Lessons from Tennessee reports on the ASD model, including the viability of charter schools within a community-based enrollment system, developing a sustainable teacher and leader pipeline, and collaboration with the Shelby County district-run turnaround effort, called iZone.