In 2007, civic and philanthropic leaders founded the nonprofit Partnership for Los Angeles Schools to transform some of the city’s highest-need, lowest-performing schools. Eleven years later, schools in the Partnership network have made notable improvements, with much more substantial gains in student performance relative to other schools in the state. This report from Public Impact examines the Partnership’s unique “in-district” model for school turnarounds and the findings from an analysis of student academic data to understand how the Partnership has addressed the significant challenges facing low-resource schools.