Sanford School of Public Policy
Duke University
Publications [#142786] of Helen F. Ladd
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NBER Working Papers
- H.F. Ladd, with Charles Clotfelter and Jacob Vigdor. "How and why do teacher credentials matter for student achievement?." Working Paper 142786 (2007).
(last updated on 2008/01/29)
Author's Comments:
Also published in The Center for the Analysis of Longitudinal Data in Education Research (CALDER), 2007.