This paper documenting the development of the Individualized Study by Telecommunications (IST) instructional model describes both the design features of the model, and the current status of procedures used for developing and adapting courses for individualized study by telecommunications. A combination of audio technology, computer technology and print materials, the IST model was developed under contract by the Northwest Regional Educational Laboratory to assist the Alaska Department of Education in its efforts to support rural districts in providing a quality secondary education. The report is divided into four parts: (1) statement of the rationale for the instructional model, including history and context; (2) statement of the role and purpose of each component of the IST model; (3) statement of the general process for developing an IST course, including adaptation of existing materials; and (4) statement of potential enhancements to the IST model. The appendices include an outline of the development/adaptation process, course materials preview forms, course development planning forms, and examples of teacher materials. A bibliography is also provided. (LLS)