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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