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Teacher credentials and student achievement in high school : a cross-subjet analysis with student fixed effects
Clotfelter, Charles T.; Ladd, Helen F.; Vigdor, Jacob L. - In: Journal of human resources : JHR 45 (2010) 3, pp. 655-681
Persistent link: https://www.econbiz.de/10008729486
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The aftermath of accelerating algebra : evidence from district policy initiatives
Clotfelter, Charles T.; Ladd, Helen F.; Vigdor, Jacob L. - In: Journal of human resources : JHR 50 (2015) 1, pp. 159-188
Persistent link: https://www.econbiz.de/10010514454
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Teacher-student matching and the assessment of teacher effectiveness
Clotfelter, Charles T.; Ladd, Helen F.; Vigdor, Jacob L. - In: Journal of human resources : JHR 41 (2006) 4, pp. 778-820
Persistent link: https://www.econbiz.de/10003391529