This document provides an agenda and background information for a summit on sustaining school turnaround efforts at scale. The summit goals are to explore challenges of implementing turnaround strategies district-wide and identify ways to work together to increase success rates. It includes a list of participating districts and partners, as well as the agenda which focuses on building principal and teacher capacity, using data, extending time, and strengthening community ties. Breakout sessions will generate lessons to share, with the goal of communicating strategies to continue improvement once initial funding ends.