This paper described a set of computer programs designed to assist the development of instructional programs utilizing a microcomputer-controlled videodisc player. The hardware and software systems and instructional programs were developed by the staff of the Interactive Videodisc for Special Education Technology Project (IVSET) at Utah State University. The criteria and description of the system design are presented, and the production elements that must occur prior to using the system are briefly described before use of the authoring system is explained. The second part of the paper describes the field test of the system conducted at the Utah State Training School in American Fork to (1) test the utility, effectiveness, and appropriateness of programs on time telling, identification of coins, and functional words for severely mentally handicapped students; (2) test the reliability of the hardware and computer programs; and (3) collect data for an analysis of the instructional sequencing. Results from a resource room field test conducted to obtain data concerning teacher use of the system are also presented. Specific and general conclusions drawn from both studies indicate that the system is an effective instructional agent for mentally retarded and learning disabled students. (LMM)