Do Motivated Classmates Matter for Educational Success?

The article investigates the social spillover effects of academic motivation—a key aspect of personality in education—on students' educational success using data from Project STAR, a randomized controlled trial in Tennessee elementary schools. It finds that being assigned to classmates with higher average academic motivation causally improves students' contemporaneous reading achievement, independent of peers' past academic ability and socio-demographic factors. However, peer motivation does not influence students' own motivation or long-term educational outcomes such as middle school test scores, high school GPA, graduation, or college-test taking. The study suggests that the short-term peer effects likely arise from a better classroom learning environment created by motivated peers, who exhibit better classroom behavior and cause less distraction. These findings imply that interventions improving children's motivation may have broader benefits by positively affecting their peers' academic performance.