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ERIC Number: EJ1049640
Record Type: Journal
Publication Date: 2015
Pages: 28
Abstractor: As Provided
ISSN: ISSN-1934-5747
Disentangling Disadvantage: Can We Distinguish Good Teaching from Classroom Composition?
Zamarro, Gema; Engberg, John; Saavedra, Juan Esteban; Steele, Jennifer
Journal of Research on Educational Effectiveness, v8 n1 p84-111 2015
This article investigates the use of teacher value-added estimates to assess the distribution of effective teaching across students of varying socioeconomic disadvantage in the presence of classroom composition effects. We examine, via simulations, how accurately commonly used teacher value-added estimators recover the rank correlation between true and estimated teacher effects and a parameter representing the distribution of effective teaching. We consider various scenarios of teacher assignment, within-teacher variability in classroom composition, the importance of classroom composition effects, and the presence of student unobserved heterogeneity. No single model recovers without bias estimates of the distribution parameter in all the scenarios we consider. Models that rank teacher effectiveness most accurately do not necessarily recover distribution parameter estimates with less bias. Since true teacher sorting in real data is seldom known, we recommend that analysts incorporate contextual information into their decisions about model choice and we offer some guidance on how to do so.
Routledge. Available from: Taylor & Francis, Ltd. 325 Chestnut Street Suite 800, Philadelphia, PA 19106. Tel: 800-354-1420; Fax: 215-625-2940; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: Elementary Education; Grade 2; Primary Education; Early Childhood Education; Grade 3; Grade 4; Intermediate Grades; Grade 5; Middle Schools
Audience: N/A
Language: English
Sponsor: National Institute on Aging (DHHS/NIH)
Authoring Institution: N/A
Grant or Contract Numbers: P30AG043073