Members of the non-profit organization Education Resource Strategies (ERS) have worked for over a decade with leaders of urban school systems to help them organize talent, time and technology to support great schools at scale. One year into the Federal program they are noticing significant differences in district turnaround approaches, engagement of partners and spending strategies. Most districts seem to have promising practices to share as well as common challenges. With this backdrop, ERS held the summit, Sustaining Turnaround at Scale that brought together central office leaders and principals from eight districts, as well as attendees from organizations that partner with turnaround schools and influence the conversation about turnaround. Over the course of the two-day summit, participants shared their experiences and perspectives on topics ranging from school designs to central office structure and from data usage to principal pipelines. The sessions were structured to enable creation of some common lessons and frameworks that could be shared within and across districts. Session participants confirmed five critical components of a complete district strategy for sustainable turnaround at scale: (1) Assess; (2) Target; (3) Define; (4) Plan Resources; and (5) Integrate. These components are explored briefly, and follow-up briefs will cover the areas that participants identified as providing the greatest challenges or opportunities. This is the first brief in a series produced by ERS that complies and analyzes the results of its Sustaining Turnaround at Scale Summit held in October 2011. Participants in Sustaining Turnaround at Scale Summit are appended. (Contains 2 figures and 11 footnotes.)