Improvements in educational attainment and in educational quality are universally acknowledged to be major contributors to black economic progress in the twentieth century. The sources of these improvements are less well understood. Many scholars implicitly assume improvements in schooling...

Improvements in educational attainment and in educational quality are universally acknowledged to be major contributors to black economic progress in the twentieth century. The sources of these improvements are less well understood. Many scholars implicitly assume improvements in schooling...

Improvements in educational attainment and in educational quality are universally acknowledged to be major contributors to Black economic progress in the Twentieth Century. The sources of these improvements are less well understood. Many scholars implicitly assume improvements in schooling...

This paper develops methods for evaluating marginal policy changes. We characterize how the effects of marginal policy changes depend on the direction of the policy change, and show that marginal policy effects are fundamentally easier to identify and to estimate than conventional treatment...