There is a growing body of research suggesting that "non-cognitive," non-academic, or social and emotional, skills (e.g., self-regulation, self-control, persistence, executive functions, social and emotional learning, social problem solving, etc.) matter a great deal for children's success in school, as well as for many other related outcomes (e.g., mental health, positive behavior, college entry and completion, earnings). For example, there is evidence that students learn more and classrooms are more functional when children and adolescents have skills such as managing negative emotions...