The Office of Technology Assessment authorized a series of case studies in 1989 to investigate how technologies, services, and programs are implemented in distance education projects. The studies were also intended to look at the role of local, state, and federal agencies, and other public and private entities in providing educational services to students, and training and staff development for teachers. Following an introductory essay, this compilation presents reports on seven case studies: (1) the InterAct Instructional Television Network--Using ITFS (Instructional Television Fixed Service) Technology for Distance Learning in the Houston (Texas) Metropolitan Area; (2) the Delaware-Chenango BOCES (Board of Cooperative Educational Services)--An Audiographics Network of Small School Districts in Upper New York State; (3) the Panhandle Share-Ed Video Network in Beaver County, Oklahoma--A Locally Owned Digital Fiber Optics School/Business Partnership; (4) the Northeastern Utah Telelearning Project--A "Mixed Bag" of Distance Learning Technologies That Have Been Merged Together; (5) Region 8--Western Region Education Center--A Regional Application of the TI-IN Satellite Network in Western North Carolina; (6) Satellite Telecommunications Educational Programming (STEP)--A Multi-State Cooperative of School Districts Receiving Satellite Delivered Television Instruction (Washington, Oregon, Idaho, Montana, California, Alaska, Kansas, and Missouri); and (7) the Pennsylvania Teleteaching Project with a Focus on Dansville School District's Participation in the Project with St. Joseph's Catholic School and the North Central Secure Treatment Unit in Dansville, Pennsylvania. Each case study contains background information, references, and appendixes. A summary and discussion of the advantages and weaknesses of the various technologies used conclude the report. (DB)