A series of three courses developed by the Northwest Regional Educational Laboratory is illustrative of materials designed to meet the needs of teachers and administrators for pre- and in-service computer science education. These courses can employ experienced outside consultants, stress the use of conversational language, and provide hands-on experience with the computer; they were created by the Laboratory's Relevant Educational Applications for Computer Technology (REACT) Program. The first course is aimed at both teachers and administrators and covers basic computer concepts and uses, along with their social impact. The second unit in the series is for teachers and deals primarily with the instructional functions of computers, while the final course is intended for administrators and examines a variety of fundamental administrative data processing applications. (PB)