The reauthorization of the U.S. Elementary and Secondary Education Act, referred to as the Every Student Succeeds Act (ESSA), emphasizes evidence-based interventions while giving states and districts new flexibility on the use of federal funds, including funds that could be used to support social and emotional learning (SEL). The authors review recent evidence on U.S.-based SEL interventions for K-12 students to better inform the use of SEL interventions under ESSA. This report discusses the opportunities for supporting SEL under ESSA, the standards of evidence under ESSA, and SEL interventions that meet the standards of evidence and might be eligible for federal funds through ESSA. Federal, state, and district education policymakers can use this report to identify relevant, evidence-based SEL interventions that meet their local needs. A companion volume catalogues these interventions in more detail and outlines the research that has examined them. Key findings in this report include: (1) ESSA supports SEL through several different funding streams; (2) Numerous SEL interventions across grade levels meet ESSA evidence requirements; (3) Educators in elementary schools and urban communities have the most options of SEL interventions that meet ESSA evidence requirements; and (4) Interpersonal competencies are the most common outcomes positively impacted in studies of evidence-based interventions. Contains a bibliography. [For "How the Every Student Succeeds Act Can Support Social and Emotional Learning. Research Brief. RB-9988-WF," see ED581646.]