Understanding how heterogeneity in peer group composition affects
academic attainment has important implications for how schools
organize students in group settings. The random assignment of cadets
to companies at West Point affords an opportunity to investigate this
issue empirically. Estimates of the impact of peer group heterogeneity
in math SAT scores on freshmen-year academic performance
reveals that more heterogeneous peer groups have positive effects on
individual grades. High-ability peers account for most of the positive
effect, while low-ability peers have no measureable effect. (JEL I23,
Lyle, David S.
"The Effects of Peer Group Heterogeneity on the Production of Human Capital at West Point."
American Economic Journal: Applied Economics,
Higher Education and Research Institutions
Human Capital; Skills; Occupational Choice; Labor Productivity
Personnel Economics: Labor Management