Abstract
Click to increase image sizeClick to decrease image size NotesThirty professors of educational administration assisted in selecting the schools included in this study.Data from one system are omitted here due to the small number of returns. Schools that participated and are included in this report are: Bronxville, N.Y.; Glencoe, 111.; River Forest, 111.; Shaker Heights, Ohio; Winnetka, 111.; Tappan Junior High School, Ann Arbor, Mich.; and Pipkin Junior High School, Springfield, Mo.Cooperation Principles and Practices, Eleventh Yearbook of the Department of Supervisors and Directors of Instruction, NEA, 1939, p. 161.Op. cit., p. 166.
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