This study focuses on the mutual use of space and joint activities in school facilities complexed with community centers and other facilities nationwide. It aims to clarify the relationship between the mutual use of space and collaborative activities , also the connection between facilities and the characteristics of the complex form. Among the 443 school facilities complexed with community centers and other facilities collected by the author, 81 cases responded to the questionnaire survey for the study. As results, five points were pointed out: the connection between facilities, the form of integration, physical circulation between facilities, zoning, and free space.