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ERIC Number: ED564070
Record Type: Non-Journal
Publication Date: 2013
Pages: 11
Abstractor: ERIC
Reference Count: 19
Using School Lotteries to Evaluate the Value-Added Model
Deutsch, Jonah
Society for Research on Educational Effectiveness
There has been an active debate in the literature over the validity of value-added models. In this study, the author tests the central assumption of value-added models that school assignment is random relative to expected test scores conditional on prior test scores, demographic variables, and other controls. He uses a Chicago charter school's lottery to identify school effects, and then compares this "experimental" estimate to that of a school value-added model, which is estimated from all students in a large district. An innovative approach is used to generate a value-added-based estimator of the lottery effect that is unbiased under the null hypothesis that the value-added model is correctly specified. The results imply small but potentially important upward bias in the math, and very minimal bias in reading. Tables are appended.
Society for Research on Educational Effectiveness. 2040 Sheridan Road, Evanston, IL 60208. Tel: 202-495-0920; Fax: 202-640-4401; e-mail:; Web site:
Publication Type: Reports - Research
Education Level: Elementary Secondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: Society for Research on Educational Effectiveness (SREE)
Identifiers - Location: Illinois