Society and education are changing rapidly, and since computers are playing a significant role in these changes it is imperative that secondary school teachers become more fully informed about computers. Computers are of interest to learners because they have led to new theoretical developments, such as automata theory, have many practical applications, pervade all aspects of modern life, and have increased the rate of change within society. In addition, they have direct applicability to education, for they can help the student to perceive and apply knowledge, to build skills, and to develop creativity and judgment through the activities of modeling, simulation, problem solving, information processing and retrieving, and computer-assisted instruction. For these reasons, teachers should be able to recognize the capabilities and limitations of the computer, understand the influence of the computer in modern society, and use it as an educational tool. In order to accomplish this, pre-service and in-service computer courses should be made available to all secondary teachers. (PB)