The first of a three-part series on computer-assisted instruction (CAI), this report describes 11 exemplary programs across the country that involve the use of microcomputers for instruction in computer science, mathematics, and science at the elementary and secondary levels. At the head of each description are the name and address of the school (or consortium or school district) implementing the program and the name and title of a person to contact there for further information. The programs featured include a 5-year computer literacy plan, an inservice staff development scheme, a set of graphic data displays for teaching physics, a computerized math tutorial program entitled "Kids Helping Kids," various programs in computer science and word processing, computer-assisted vocational programs, computer-based adult education classes in business and data management, and a districtwide curriculum plan aimed at computer awareness in elementary school, computer literacy in junior high, and computer science in senior high. Also included is a description of the Minnesota Educational Computing Consortium, a statewide agency devoted to propagating instructional use of microcomputers and producing student-inspired courseware. Additional resources are listed for interested principals, including upcoming workshops and computer periodicals. (TE)