The staff development model described in this paper involves collaborative planning in which the teachers are involved, while also providing a mechanism to assist participants to identify their inservice needs. The model consists of three major components: (1) the preliminary input of a selected committee which produces a needs assessment survey; (2) the distribution of the survey to all personnel; and (3) a summary of responses to the survey which makes it possible to construct a useful and relevant staff development plan. Personnel from the Institute for Educational Research, which is a non-profit consortium of 125 school districts in Illinois, work actively with the school personnel in all phases of the development of the inservice program. The model is individualized for each school setting and sensitive to the particular needs of each school district. (JD)