Using Maimonides' rule to estimate the effect of class size on scholastic achievement
Using Maimonides' rule to estimate the effect of class size on scholastic achievement
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DOI：
10.1162/003355399556061
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发表时间：
1999-05-01
影响因子：
13.7
通讯作者：
Lavy, V
中科院分区：
文献类型：
--
作者：
Angrist, JD;Lavy, V
12世纪的拉比学者迈蒙尼德建议班级人数最多为40人。同样的最大值导致了今天以色列公立学校的年级入学和班级规模之间的非线性和非单调关系。这里使用迈蒙尼德的40法则来构建工具变量，估计班级规模对考试成绩的影响。由此产生的识别策略可以看作是唐纳德坎贝尔的回归-不连续设计在类大小问题上的应用。估计表明，减少班级规模可以显著提高四年级和五年级学生的考试成绩，尽管三年级学生的考试成绩没有显著提高。
The twelfth century rabbinic scholar Maimonides proposed a maximum class size of 40. This same maximum induces a nonlinear and nonmonotonic relationship between grade enrollment and class size in Israeli public schools today. Maimonides' rule of 40 is used here to construct instrumental variables estimates of effects of class size on test scores. The resulting identification strategy can be viewed as an application of Donald Campbell's regression-discontinuity design to the class-size question. The estimates show that reducing class size induces a significant and substantial increase in test scores for fourth and fifth graders, although not for third graders.