The skills people need to thrive in their workplaces and communities extend well beyond academic achievement. Interpersonal skills, such as the ability to work in teams, and intrapersonal skills, such as the ability to recognize and manage emotions, enable individuals to succeed in and out of school and become engaged, contributing members of society. Social and emotional learning (SEL) is the process through which people develop these competencies. The RAND Center for Social and Emotional Learning Research provides new evidence about the implementation and effectiveness of SEL programs, practices, and assessments. We also translate that evidence into concrete guidance to inform policy and practice at all levels of the education system.