The CORE Districts began working together in 2010 with a vision for mutual accountability and shared responsibility for the one million students they serve. By sharing data and lessons learned locally, they are improving student outcomes. Learn how the evolution to a networked improvement community is linking hundreds of educators in urban districts to specifically address the pervasive math achievement gap for African American and Latino youth, and prompting attention to race and equity, data, and system changes that result in sustainable improvements for all students.