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Tindal, Gerald; And Others – Remedial and Special Education (RASE), 1987
The study examined the hypothesis that different evaluative interpretations of studies of special education effectiveness may be a function of the manner in which data are summarized and reported. Four metrics are compared including raw score, grade-equivalent score, z-score, and discrepancy index. Criteria for selecting metrics for program…
Descriptors: Disabilities, Elementary Secondary Education, Evaluation Methods, Grade Equivalent Scores