Meta-analysis, meta-evaluation and secondary analysis are methods of summarizing, examining, evaluating or re-analyzing data in research and evaluation efforts. Meta-analysis involves the summarization of research findings to come to some general conclusions regarding effects or outcomes of a given treatment/project/program. Glass's approach…

Interim results of the American Institutes for Research study on the impact of the ESEA Title VII Spanish/English Bilingual Education Program imply that certain inferences can be made about the program, inferences which are unjustifiable. By providing only statistical averages on a national sample, the report does a serious disservice by failing…