This case study documents the evolution and implementation of the School Self Improvement Project, an experimental program carried out in two New York City high schools by the Coalition of Business and Education Collaboration (CBEC). Established in the mid 1970s, the program was one of nine at sites chosen by the Documentation and Technical Assistance (DTA) Project as representing exemplary strategies for problem solving in urban schools. The general intent of the self improvement project is described as the involvement of CBEC in the educational planning process in order to maximize the use of available resources in the school settings. Four goals are outlined: (1) stimulation of personal involvement and responsibility in school planning and professional development; (2) learning and application of organizational development techniques; (3) development of particular supervisory skills among administrators; and (4) development of capacities for self analysis, feedback, and refinement of self improvement processes. Activities developed to carry out these goals are detailed, as are modifications in the original program model. Appended are plans from each of the participating high schools, professional development materials, and DTA field data collection forms. (GC)