From 2010 to 2015, Tennessee’s charter sector grew from 29 schools serving 5,500 students to 98 schools and 29,000 students, including 24 multi-school networks operating in the state. This report describes how the convergence of favorable policy conditions, political leadership, and public-private grants accelerated the growth of high-quality charter schools committed to underserved communities in Memphis and Nashville. The report also examines strategies that the Tennessee Charter School Incubator and the Charter School Growth Fund used to identify and develop promising new school leaders and to start and expand high-performing charter organizations. The Tennessee story provides a lesson for education leaders in how to create the conditions conducive to growing a high-quality charter sector.