This paper develops a measure of efficiency when data have been aggregated. Unlike the most commonly used efficiency measures, our estimator handles the heteroskedasticity created by aggregation appropriately. Our estimator is compared to estimators currently used to measure school efficiency....

Large families in rural areas causes pressure on natural resources, an upsurge of inter-community conflicts. Anecdotal evidence suggests that one reason for large families is the value of children as a source of labor.This research determines the marginal change in household productivity with...