Realizing that school sites can play an important role in enhancing the educational process, guidelines dealing with the development of a school site for environmental education purposes are presented. First, the roles of this site for environmental studies are explained as: (1) an ecology laboratory, (2) an environmental management laboratory, (3) a natural history interpretive area, and (4) a multiple-use school and community recreation area. Site planning is viewed as the key to effective school site design, development, and utilization. The three basic phases of planning are discussed in detail. Site Analysis gives an inventory of all factors which may influence the site; natural and man-made influences relating to ecological, economic, political, social, technological, and aesthetic points of view. Program Development is concerned with analyzing the nature of the particular purpose or use for the site. Design Concept Development is the graphic interpretation of how the site and program should be blended into a compatible solution. Accompanying the narrative material are examples of site analysis diagrams; a model of steps in the program development process; and examples of the schematic solution to the design problem. This work was prepared under an ESEA Title III contract. (BL)