eric.ed.gov har udgivet: This research brief presents selected findings from work examining the stability of value-added model estimates of teacher effectiveness and their implication for tenure policies. Findings show year-to-year correlations in teacher effects are modest, but pre-tenure estimates of teacher job performance do predict estimated post-tenure performance in both math and reading, and would therefore seem to be a reasonable metric to use as a factor in making substantive teacher selection decisions. (Contains 2 tables, 2 figures, and 15 notes.) Link til kilde
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eric.ed.gov har udgivet: This policy brief, a quick look at some aspects of the debate, illustrates the differences in New York City public schools that would result when layoffs are determined by seniority in comparison to a measure of teacher effectiveness. Due to data limitations and an interest in simplicity, this analysis employs the value added of teachers using the 4th and 5th grade math and ELA (English Language Arts) achievement of their students. Unsurprisingly, the authors find that layoffs determined by a measure of teacher effectiveness result in a more effective workforce than would be the case with seniority-based layoffs. However, they were surprised by facets of the empirical results. First, assuming readily available measures of teacher effectiveness actually measure true teacher effectiveness, an assumption to which they return… Continue Reading →
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eric.ed.gov har udgivet: Over 2000 teachers in the state of Washington received reduction-in-force (RIF) notices in the past two years. The authors link data on these RIF notices to a unique dataset that includes student, teacher, school, and district variables to determine the factors that predict the likelihood of a teacher receiving a RIF notice. They find a teacher’s seniority is the greatest predictor, but (all else equal) teachers with a master’s degree and teachers credentialed in the “high-needs areas” of math, science, and special education were less likely to receive a RIF notice. Value-added measures of teacher effectiveness can be calculated for a subset of the teachers and these show no relationship between effectiveness and the likelihood of receiving a RIF notice. Finally, simulations suggest that a very different… Continue Reading →
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eric.ed.gov har udgivet: Most analyses of teacher quality end without any assessment of the economic value of altered teacher quality. This paper combines information about teacher effectiveness with the economic impact of higher achievement. It begins with an overview of what is known about the relationship between teacher quality and student achievement, which provides the basis for consideration of the derived demand for teachers which comes from their impact on economic outcomes. Alternative valuation methods are based on the impact of increased achievement on individual earnings and on the impact of low teacher effectiveness on economic growth through aggregate achievement. A teacher one standard deviation above the mean effectiveness annually generates marginal gains of over $400,000 in present value of student future earnings with a class size of 20 and… Continue Reading →
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