A Test for Efficiency in the Supply of Local Public Education with Judy Roberts, Dan Rubinfeld, Perry Shapiro, 1988 This paper devises and applies a statistical test for efficient provision of local public education. The test is based on the ``Samuelson condition'' of equality between the sum of marginal rates of substitution and marginal cost. The econometric method is a micro-based approach to the estimation of the marginal rate of substitution function. This method accounts for possible ``Tiebout bias'' caused by the fact that individuals may choose their school districts in accordance with their tastes for education.