This paper provides evidence of the effect of age at school entry on college admission and earnings. It does so by … applicants with different ages at school entry depending on whether they were born on December 31 or on January 1, our estimates …

universal random assignment of students to high schools in certain areas of South Korea to provide estimates of school effects … that may better reflect the effects of school practices. We find significant effects of schools on scores in high …-stakes college entrance exams: a 1 standard deviation increase in school quality leads to 0.06-0.08 standard deviations higher …