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McCaffrey, Daniel F. – Carnegie Foundation for the Advancement of Teaching, 2013
Value-added evaluations use student test scores to assess teacher effectiveness. How student achievement is judged can depend on which test is used to measure it. Thus it is reasonable to ask whether a teacher's value-added score depends on which test is used to calculate it. Would it change if a different test was used? Specifically, might a…
Descriptors: Scores, Accountability, Achievement Gains, Teacher Effectiveness
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