Understanding how and why rising racial and economic segregation impacts achievement gaps is critical to closing them. Analyzing data from every school district in the U.S., researchers sean reardon, Erin Fahle, Heewon Jang, and Ericka Weathers evaluate how growing racial segregation interacts with unequal economic opportunities and contributes to achievement gaps in schools. According to the authors, achieving lasting equity in education will require disrupting systems that concentrate low-income students and students of color in schools with fewer of the resources required for academic success.