The Benefits of Delayed Primary School Enrollment
利用智利学生行政数据，通过断点回归发现延迟一年入学使一年级留级概率降低2个百分点，四、八年级考试成绩提高0.3个标准差以上，对男孩效果更大。
The paper estimates the effect of delayed school enrollment on student outcomes, using administrative data on Chilean students that include exact birth dates. Regression-discontinuity estimates, based on enrollment cutoffs, show that a one-year delay decreases the probability of repeating first grade by two percentage points, and increases fourth and eighth grade test scores by more than 0.3 standard deviations, with larger effects for boys. The paper concludes with implications for enrollment age policy.