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American Economic Review Vol. 94 No. 2 2004

The Impact of Individual Teachers on Student Achievement: Evidence from Panel Data

Jonah E. Rockoff

Department of Economics, Harvard University, Cambridge MA 02138, and NBER.

Abstract

Teacher quality is widely believed to be important for education, despite little ev-idence that teachers ’ credentials matter for student achievement. To accurately measure variation in achievement due to teachers ’ characteristics–both observ-able and unobservable–it is essential to identify teacher fixed effects. Unlike previous studies, I use panel data to estimate teacher fixed effects while control-ling for fixed student characteristics and classroom specific variables. I find large and statistically significant differences among teachers: a one standard deviation increase in teacher quality raises reading and math test scores by approximately.20 and.24 standard deviations, respectively, on a nationally standardized scale. In addition, teaching experience has statistically significant positive effects on reading test scores, controlling for fixed teacher quality.

DOI
10.1257/0002828041302244
Volume
94
Issue
2
Pages
247-252
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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