Exploring the critical role of school choice in the future of education reform, Grover (Russ) Whitehurst introduces the Education Choice and Competition Index (ECCI), an interactive web application that scores large school districts based on thirteen categories of policy and practice. The intent of the ECCI is to create public awareness of the differences among districts in their support of school choice, provide a framework for efforts to improve choice and competition, and recognize leaders among school districts in the design and implementation of choice and competition systems. [This report was written with Sarah Whitfield.]