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Hiscox, Suzanne B.; Owen, Thomas R. – 1978
This study explored the assumption that the percentile rank of a group of students should be expected to remain the same on a post-test as on a pretest when the treatment of the group in the intervening period was the same as the treatment of the norms population. This assumption is basic to the use of the norm-referenced model for the assessment…
Descriptors: Academic Achievement, Achievement Tests, Attrition (Research Studies), Compensatory Education
