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Gifford, Vernon D.; Dean, Margie McGowan – 1988
Four operational null hypotheses were assessed in a study of ninth graders placed in junior high schools (grades 7 through 9) or senior high schools (grades 9 through 12). The hypotheses state that there would be no significant differences in: (1) the mean number of extracurricular activities (EAs) in which ninth graders participated, whether in…
Descriptors: Academic Achievement, Comparative Analysis, Extracurricular Activities, Grade 9