Good peers have asymmetric gendered effects on female educational outcomes: Experimental evidence from Mexico

This study examines the gendered effects of early and sustained exposure to high-performing peers on female educational trajectories. Exploiting random allocation to classrooms within middle schools, we measure the effect of male and female high performers on girls’ high school placement outcomes. We examine the effects that peers have on two distinct outcomes: academic performance and preferences for schools with more-selective admission standards. We focus on the effects of peers along the distribution of baseline academic performance. Exposure to high-performing peers of either sex reduces the degree to which high-achieving girls seek placement in more-selective schools. High-achieving boys have particularly strong, negative effects on high-performing girls’ admission scores and preferences for more-selective and more-academic schools. By contrast, high-achieving girls improve low-performing girls’ placement outcomes, but exclusively through a positive effect on exam scores.