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ERIC Number: ED433700
Record Type: RIE
Publication Date: 1999
Pages: 19
Abstractor: N/A
Mystery on the Bilingual Express: A Critique of the Thomas and Collier Study.
Rossell, Christine H.
A study of school effectiveness for language minority students, authored by Virginia Collier and Wayne Thomas, is criticized as having two serious flaws. The first is that its methodology is a simple descriptive cohort analysis, seen as unscientific and producing misleading results because: each grade consists of different students; the number of students in each grade is not given; there is no statistical control for pretreatment differences; and the test scores shown after elementary school are not for the same cohorts. The second flaw is that little about the methodology is explained. (Contains 14 references.) (MSE)
Web site: (full text).
Publication Type: Opinion Papers
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: READ: Research in English Acquisition and Development Inst., Inc., Washington, DC.
Note: This document has been downloaded from source's Web site.