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Ensaio: Avaliação e Políticas Públicas em Educação 2013, 21 78

Author: Henry Braun

Source: http://www.redalyc.org/articulo.oa?id=399538144007


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Ensaio: Avaliação e Políticas Públicas em Educação ISSN: 0104-4036 ensaio@cesgranrio.org.br Fundação Cesgranrio Brasil Braun, Henry Value-added Modeling and the Power of Magical Thinking Ensaio: Avaliação e Políticas Públicas em Educação, vol.
21, núm.
78, enero-marzo, 2013, pp.
115130 Fundação Cesgranrio Rio de Janeiro, Brasil Disponível em: http:--www.redalyc.org-articulo.oa?id=399538144007 Como citar este artigo Número completo Mais artigos Home da revista no Redalyc Sistema de Informação Científica Rede de Revistas Científicas da América Latina, Caribe , Espanha e Portugal Projeto acadêmico sem fins lucrativos desenvolvido no âmbito da iniciativa Acesso Aberto Value-added Modeling and the Power of Magical Thinking Henry Braun* Abstract This article explains the impetus in the United States behind the drive to extend test-based accountability to teachers and the growing interest in employing valueadded models to generate the indicators to be used in teacher evaluation.
The empirical literature finds that teaching quality is the most important school-related determinant of student.
Yet, in the main, teacher evaluations are done poorly – if at all – and compensation has been largely determined by seniority and credentials. Policy makers see strengthening teacher accountability as a priority.
In particular, they are looking to increase the role of outputs in comparison to inputs.
However, given the technical problems associated with status-based indicators of teacher and school effectiveness, the focus has turned to indicators based on some measure of the progress students have made during the academic year.
Value-added analysis relies on sophisticated statistical models to generate estimates of the relative effectiveness of teachers, based on a measure related to student progress.
This article provides a brief introduction to value-added models and summarizes key research findings.
Although value-added estimates have some desir...





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