tandfonline.com har udgivet en rapport under søgningen “Teacher Education Mathematics”: ABSTRACT Formulae display:?Mathematical formulae have been encoded as MathML and are displayed in this HTML version using MathJax in order to improve their display. Uncheck the box to turn MathJax off. This feature requires Javascript. Click on a formula to zoom. ABSTRACT This study shows value-added models (VAM) and student growth percentile (SGP) models fundamentally disagree regarding estimated teacher effectiveness when the classroom distribution of test scores conditional on prior achievement is skewed (i.e., when a teacher serves a disproportionate number of high- or low-growth students). While conceptually similar, the two models differ in estimation method which can lead to sizable differences in estimated teacher effects. Moreover, the magnitude of conditional skewness needed to drive VAM and SGP models apart… Continue Reading →
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tandfonline.com har udgivet en rapport under søgningen “Teacher Education Mathematics”: Abstract We provide a side-by-side comparison of school and teacher growth measures estimated from different value-added models (VAMs). We compare VAMs that differ in terms of which student and school-level (or teacher-level) control variables are included and how these controls are included. Our richest specification includes 3 years of prior test scores for students and the standard demographic controls; our sparsest specification conditions only on a single prior test score. For both schools and teachers, the correlations between VAM estimates across the different models are high by conventional standards (typically at or above 0.90). However, despite the high correlations overall, we show that the choice of which controls to include in VAMs, and how to include them, meaningfully influences school and… Continue Reading →
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tandfonline.com har udgivet en rapport under søgningen “Teacher Education Mathematics”: Abstract The ASA issued a statement to inform the current national discussion on the use of value-added models (VAMs) in making high-stakes decisions regarding teacher performance appraisals and compensation. This article outlines a number of issues behind the decision to make this public statement. Link til kilde
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tandfonline.com har udgivet en rapport under søgningen “Teacher Education Mathematics”: Abstract The position statement on value-added models published by the American Statistical Association (ASA) suggested guidelines and issues to consider when using value-added models as a component of a teacher evaluation system. One suggestion offered is that value-added results should be accompanied by measures of precision. It is important, however, to go beyond simply reporting measures of precision alongside point estimates, but instead to formally include measures of precision into the value-added models and teacher classification systems. This practice will lead to improved inferences and reduced misclassification rates. Therefore, the aim of this article is to offer two suggested approaches for including measures of precision into the value-added model process. The first suggestion is to account for measurement error in… Continue Reading →
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tandfonline.com har udgivet en rapport under søgningen “Teacher Education Mathematics”: Abstract In a recent statement, the American Statistical Association (ASA) discusses the use of value-added measurement to evaluate teacher quality. We present our views on the issues raised by the ASA, in light of research we and others have done on this subject. We highlight areas of agreement with the ASA statement, clarify which issues raised by the ASA have been largely resolved, and point to those issues which should be a priority for future research. Link til kilde
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tandfonline.com har udgivet en rapport under søgningen “Teacher Education Mathematics”: Abstract Formulae display:?Mathematical formulae have been encoded as MathML and are displayed in this HTML version using MathJax in order to improve their display. Uncheck the box to turn MathJax off. This feature requires Javascript. Click on a formula to zoom. School districts and state departments of education frequently must choose among a variety of methods to estimate teacher quality. This article investigates the consequences of some of these choices. We examine estimates derived from student growth percentile and commonly used value-added models. Using simulated data, we examine how well the estimators can rank teachers and avoid misclassification errors under a variety of assignment scenarios of teachers to students. We find that growth percentile measures perform worse than value-added measures… Continue Reading →
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tandfonline.com har udgivet en rapport under søgningen “Teacher Education Mathematics”: ABSTRACT Formulae display:?Mathematical formulae have been encoded as MathML and are displayed in this HTML version using MathJax in order to improve their display. Uncheck the box to turn MathJax off. This feature requires Javascript. Click on a formula to zoom. ABSTRACT It is common in the implementation of teacher accountability systems to use empirical Bayes shrinkage to adjust teacher value-added estimates by their level of precision. Because value-added estimates based on fewer students and students with “hard-to-predict” achievement will be less precise, the procedure could have differential impacts on the probability that the teachers of fewer students or students with hard-to-predict achievement will be assigned consequences. This article investigates how shrinkage affects the value-added estimates of teachers of hard-to-predict… Continue Reading →
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tandfonline.com har udgivet en rapport under søgningen “Teacher Education Mathematics”: ABSTRACT Formulae display:?Mathematical formulae have been encoded as MathML and are displayed in this HTML version using MathJax in order to improve their display. Uncheck the box to turn MathJax off. This feature requires Javascript. Click on a formula to zoom. ABSTRACT Value-added models (VAMs) are being used in education to link the contribution of individual teachers and schools to students’ learning. The use of VAMs has been surrounded by controversy and high-profile public debates. On April 8, 2014 the American Statistical Association (ASA) released a statement on VAMs related to their use in education practice. In this article, we lay out the discussion of the main points raised in the ASA statement within the large amount of scholarly literature… Continue Reading →
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