From the report: In this guide, we present a set of overarching principles and strategies to address the social-emotional and mental health needs of both students and adults at this critical juncture and beyond. We then highlight some of the key efforts being undertaken and resources being offered in a set of districts that we have identified as leaders in the field: Broward County Public Schools, the Cleveland Metropolitan School District, the Los Angeles Unified School District, and Tulsa Public Schools. Finally, we provide a list of academic and district experts in the field of social-emotional learning and behavior and mental health. Our urban communities need our support now more than ever, and we hope this guide helps to advance the planning and implementation of safe and supportive learning environments.