ecent shifts in education policy have emphasized expanding definitions of student success beyond high scores on standardized tests (Aspen Institute, 2019). The Every Student Succeeds Act (ESSA), which guides state and local policymakers' decisions on spending federal funds, is one such shift. ESSA supports a broad definition of student success that includes competencies and practices often described with the phrase "social and emotional learning" (SEL; Grant et al., 2017). ESSA also allows measures of student success in social and emotional domains to be included in state accountability and school improvement systems. At the state level, 14 states have SEL standards in addition to their academic standards, and 21 states disseminate SEL-related guidance for districts and schools through their websites (Collaborative for Academic, Social, and Emotional Learning [CASEL], undated). The recently released final report from the Commission on Social, Emotional, and Academic Development summarizes the extensive research that supports this focus on SEL (Aspen Institute, 2019). SEL involves a wide range of programs, practices, and student competencies. The Commission on Social, Emotional, and Academic Development report summarizes three broad approaches to promoting SEL: (1) explicit instruction on one or more social or emotional competencies, (2) integration of SEL into academic instruction and other activities, and (3) promotion of