Against the backdrop of global transformations in university admission systems, the quest for an enrolment paradigm that efficiently identifies and selects high-quality students has gained paramount significance. With the help of propensity score matching (PSM), this study controlled students' backgrounds and compared the performance of students…

This paper studies a natural experiment due to an unusual change in the college admission policy at a Chinese university, which brought a large number of low-score students into several academic departments in the university. Exploiting large variations in peer characteristics and strong interactions among peer groups, the analysis finds that…