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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