This is a study of the constitution and development of a community school in a town near Belgrade. It is one of numerous community schools which expresses the characteristics of its particular commune and which participates actively in the development of the commune. Part 1 of this study lays out the basic principles and social demands for the building up of community schools in Yugoslavia. Part 2 examines the development of the Sonja Marinkovic eight-year elementary school in Zemun (an ancient town now part of greater Belgrade) as the model of a community school and includes discussions on selecting local source materials and persons to contribute to the curriculum, involving students in production work, school participation in community activities, and self-management in the school. In part 3 conclusions are drawn regarding effects and general results of the practice of this school. (Author/JH)