Tracking Can Be More Equitable Than Mixing
研究分轨与混合教育体系对机会平等的影响，发现当上大学的机会成本足够高时，分轨制能最大化弱势背景学生的终身收入。
Abstract Parents and policy‐makers often wonder whether and how the choice of a tracked or mixed educational system affects the equality of opportunity. I answer this question by analyzing the influence of peers on future educational results. I define an equal opportunity policy as one that maximizes the average lifetime income of the worst‐off type of individuals in society (i.e., students from disadvantaged backgrounds). I find that tracking maximizes average lifetime income if the opportunity cost of college attendance is sufficiently high.