Computer assisted instruction, and especially computer simulations, can help to ensure that preservice and inservice teachers learn from the right experiences. In the past, colleges of education used large mainframe computer systems to store student registration, provide simulation lessons on diagnosing reading difficulties, construct informal reading inventories, and provide mobile delivery service for inservice instruction. However, due to their cost and the lack of grant money, these programs are no longer in use. Today, colleges of education are using stand-alone microcomputers for tutorials, games, word processing, and simulations. Future uses of computer technology might include interactive videodiscs for the presentation of lectures, networks for online references, online testing or data base management, and teleconferencing. These uses have great potential for improving the efficiency and effectiveness of teacher learning because (1) they provide preservice teachers with designed rather than accidental sets of experiences, (2) the experiences they create decrease the chances of inexperienced teachers doing educational harm to future students, and (3) they free professors for more supervision of preservice teachers in the classroom, for more small group work, and perhaps for more research. Nevertheless, these possibilities may be hampered by the low priority colleges of education have placed on the technical training needed to implement such programs. (HOD)