Charles T. Clotfelter Helen F. Ladd Jacob L. Vigdor Sanford Institute / Urban Institute / /
Organization
Duke University / Urban Institute / Spencer Foundation / World Bank / National Center for the Analysis of Longitudinal Data / Charles T. Clotfelter Helen F. Ladd Jacob L. Vigdor Sanford Institute / American Education Finance Association / U.S. Department of Education / North Carolina Education Research Data Center / /
Person
Charles T. Clotfelter Helen / Jonah Rockoff / Trip Stallings / Aaron Hedlund / Helen F. Ladd / Roger Aliaga-Diaz / Helen F. Ladd Jacob / Jacob L. Vigdor / /