The Marginal Returns to Distance Education: Evidence from Mexico’s Telesecundarias
研究墨西哥大规模远程教育项目（电视中学）对数学和西班牙语学习的边际处理效应，发现该项目能显著提升学生成绩并减少教育不平等，扩大规模可带来更多收益。
This paper analyzes a large-scale and long-running distance education program in Mexico. We estimate marginal treatment effects (MTEs) for learning in math and Spanish in telesecundarias relative to traditional Mexican secondary schools using an empirical framework that allows for unobserved sorting on gains. The estimated MTEs reveal that school choice is not random and that the average student experiences significant improvements in both math and Spanish after just one year of attendance in telesecundarias. We find that the existing policy reduces educational inequality, and our policy-relevant treatment effects show that expanding telesecundarias would yield significant improvements in academic performance.