To help school leaders understand the association between social media use and adolescents' mental health, the Center for Public Education (CPE) of the National School Boards Association (NSBA) reviewed over a hundred relevant empirical studies, professional or federal research papers, and media articles. This report attempts to answer the following questions: (1) What adolescent mental health issues manifested themselves most during the pandemic? (2) How do teenagers use social media? What does the research say about the association between social media use and adolescents' mental health? and (3) What are some professional recommendations, state policies, and/or local practices that have been adopted to promote positive use of social media and mental well-being?