The reliability, impact, and cost-effectiveness of value-added teacher assessment methods

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Abstract

This article reviews evidence regarding the intertemporal reliability of teacher rankings based on value-added methods. Value-added methods exhibit low reliability, yet are broadly supported by prominent educational researchers and are increasingly being used to evaluate and fire teachers. The article then presents a cost-effectiveness analysis suggesting that the use of value-added methods to identify and fire the bottom 40% of all teachers reduces average student achievement, is extremely expensive, and is not cost-effective. The policy implication of these results is discussed.

Original languageEnglish (US)
Pages (from-to)374-399
Number of pages26
JournalJournal of Education Finance
Volume37
Issue number4
DOIs
StatePublished - May 29 2012

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