Plausibly Exogenous [1723] - Maimonides (10/21/2024)

LHS Variable
Standardized test scores

RHS Variable
Class size

Source of Exogenous Variation
Maimonides' Rule, which mandates that class sizes should not exceed 40 students. This rule creates a discontinuity in class size at specific thresholds of enrollment.

- Angrist and Lavy (1999), “Using Maimonides' rule to estimate the effect of class size on scholastic achievement”