Children's behavior with teachers, supervisors and other children while in school buildings, and on school grounds, will be considered from three points of view: supervision of study, supervision of discipline, and supervision of play. Our school systems, both public and private, control the minds of youth, and are responsible for individual and group behavior of children during the greater portion of their plastic development. Certain stereotyped standards have been established by the hierarchy ©f authority which extends from the board of education through superintendent, principals, supervisors, to the teachers. These standards are apt to fulfill artificial adult conceptions of school attitudes rather than to reflect genuine child responses of social, cooperative, and active behavior of healthy youngsters. The psychological atmosphere of schoolrooms indicates the eomplex interrelationships among children and between children and teachers. Control prevails over study, discipline, and play. Is it the old type of traditional suppression and autocratic coercion, or is it the new type of supervision and cooperative leadership which fosters individual expression and creative activities?The best progressive schools are those which are organized to meet the child's needs for the development of his total organism, to provide outlets for the creative use of energies, and to develop an atmosphere of self-confidence and security in all the social relationships of living, thereby creating a milieu in which children can function. Maladjusted, "warped," and suppressed personalities do not thrive in such progressive schools, because they try to provide the environment, school atmosphere, and teacher attitude which foster creative self-expression and self-control, and develop children with whom it is easier to live. In order for a school to continue a well-ordered family relationship or to modify a badly managed family life for a child, the closest cooperation °f parents, siblings, and teachers is necessary. Scientific studies °f child behavior in these interrelationships will eventually reveal 411