This report describes four schools (two elementary, one middle, and one senior high) whose administration and faculty made longterm commitments to curricular and organizational change to meet the needs of a diverse student population. Data sources included observation of meetings; conversations with staff members; and informal interviews with district administrators, teachers, and in some cases, parents and students. Brief summaries of each case study are provided in which changes in curriculum, instruction, and school organization during the 1991-92 school year are discussed. Findings indicate that power and decision-making authority are continually negotiated and renegotiated among all participants, and that visions of change compete as teachers, principals, and district officers struggle to maintain control and permit others to participate in shaping the short- and long-term direction of the school. Finally, in order to maintain and expend the reform initiatives, schools are developing an entrepreneurial focus. (Contains 21 references.) (LMI)