Collaborative for Academic, Social, and Emotional Learning (CASEL) is the nation's leading organization advancing the development of academic, social and emotional competence for all students. Our mission is to help make evidence-based social and emotional learning (SEL) an integral part of education from preschool through high school. Through research, practice, and policy, CASEL collaborates to ensure all students become knowledgeable, responsible, caring and contributing members of society.