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…

Reviews the results of a 1991 U.S. Department of Education report entitled "A Descriptive Study of Significant Features of Exemplary Special Alternative Instructional Programs." The features of nine exemplary special alternative instructional programs are described that appeared to contribute to positive outcomes for students from diverse…

Discusses how clinicians and researchers can critically evaluate information from efficacy studies of language intervention programs. It argues for combining both experimental and nonexperimental approaches and suggests that the use of matching in nonrandomized studies allows for comparison of groups of children participating in an intervention…

Seven priorities in bilingual education research are suggested: effectiveness of bilingual education programs; second language acquisition; acquisition and use of minority languages in the United States; cultural and other differences between students and school; readiness for instruction in the second language; student assessment and diagnosis;…