The Public Broadcasting Service (PBS) established three programming services in 1979 by vote of the member stations. One of these services, PTV-3, delivers specifically educational programming serving out-of-school youngsters, providing inschool instruction, and offering adult education. While the number of adults earning college credit through locally-produced television courses has increased dramatically in the last decade, the newly-established PTV-3 service will permit courses produced for national delivery to be selected for local use by participating institutions. Future offerings will include three types of programs: college credit telecourses that include books and materials as well as the television programs themselves; wraparounds, consisting of television series produced for general audiences but which can be adapted for college credit use; and teleconferences for local public television station and educational personnel. PBS itself is currently planning for development of an arts- and education-oriented subscriber service. (Author/PGD)