The ExpandED Schools model for expanded learning is designed to transform schools by changing the use of time, both as experienced by students in learning and by teachers in instruction. The model is grounded in the belief that strategically adding time to the school day can enhance skills and knowledge and broaden horizons by engaging students in enriched learning opportunities beyond core academics. Community partner organizations play an instrumental role in supporting this expanded learning experience in ExpandED schools. Policy Studies Associates (PSA) has evaluated the national demonstration of ExpandED Schools since the demonstration, supported by The Wallace Foundation and others, was launched in the 2011-12 school year in 10 schools in New York City, NY; Baltimore, MD; and New Orleans, LA. Over four years, the evaluation explored the approaches that participating schools took to adopting the ExpandED Schools model, in particular seeking to understand the conditions that support--or hinder--the implementation of an expanded day. The following topics are presented in this report: (1) The ExpandED Schools Model; (2) The Evaluation Approach; (3) Adoption of the Core Elements in the National Demonstration; (4) Factors That Support Adoption, Scale, and Sustainability; and (5) Recommendations for School and Community Leaders.