The Agency for Instructional Television (AIT) works with educational agencies in the United States and Canada as partners in the process of educational change through school television. The organization develops school television programming for consortia of state and provincial education agencies. Since 1970, it has completed nine major projects. In producing materials, the AIT uses a three phase development process. In the initiation phase, activities focus on determining needs and conceptualizing the project. In the production phase, the conceptualization is translated into designs for television programs and related printed materials, development of the materials takes place, and evaluation activities go forward. In the third phase, assimilation, the AIT assists with the integration of materials into the curricula of consortium agencies. Assimilation phase activities also include teacher inservice and orientation and community awareness programs. Appendices include a case study of the conceptualization of one programming project, a cost structure for consortium participation, some curriculum design examples, and an example of a teacher's guide. An extensive bibliography is also included. (LLS)