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Mihaly, Kata; McCaffrey, Daniel; Sass, Tim R.; Lockwood, J. R. – Education Finance and Policy, 2013
We consider the challenges and implications of controlling for school contextual bias when modeling teacher preparation program effects. Because teachers are not randomly distributed across schools, failing to account for contextual factors in achievement models could bias preparation program estimates. Including school fixed effects controls for…
Descriptors: Teacher Education Programs, Teacher Education, Program Evaluation, Context Effect
Mihaly, Kata; McCaffery, Daniel; Sass, Tim R.; Lockwood, J. R. – National Center for Analysis of Longitudinal Data in Education Research, 2012
In this paper we consider the challenges involved in evaluating teacher preparation programs when controlling for school contextual bias. Including school fixed effects in the achievement models used to estimate preparation program effects controls for school environment by relying on differences among student outcomes within the same schools to…
Descriptors: Teacher Certification, Educational Environment, Preservice Teacher Education, Educational Quality
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McCaffrey, Daniel F.; Sass, Tim R.; Lockwood, J. R.; Mihaly, Kata – Education Finance and Policy, 2009
The utility of value-added estimates of teachers' effects on student test scores depends on whether they can distinguish between high- and low-productivity teachers and predict future teacher performance. This article studies the year-to-year variability in value-added measures for elementary and middle school mathematics teachers from five large…
Descriptors: Teacher Characteristics, Mathematics Achievement, Sampling, Middle School Teachers