In this study from the Journal of Youth and Adolescence, researchers examine how the breadth of activities in which an adolescent participates relates to academic outcomes. The sample included more than 800 ethnically diverse 11th grade students. The researchers looked at the relationships between these students' participation in four activity domains (academic/leadership groups, arts activities, clubs, and sports) and their sense of belonging at school, academic engagement, and grade point average (in 11th as well as 12th grade). Results showed that  adolescents who were moderately involved (i.e., in two domains) reported a greater sense of belonging at school in 11th and 12th grade, a higher grade point average in 11th grade, and greater academic engagement in 12th grade, relative to those who were more or less involved.