The Biological Science Curriculum Study with support from others conducted a three-year project (ENLIST Micros II) to develop and test a model for implementing educational computing in science courses. Descriptive data on background characteristics, prior experience with microcomputers, and educational level of the leaders and new participants was gathered. Leaders and new participants evaluated the workshops and seminars using questionnaires. The project used the Concerns Based Adoption Model (CBAM) developed by the Research and Development Center for Teacher Education at the University of Texas as the approach to evaluating implementation. Leaders and new participants completed the Stages of Concern Questionnaire and the Microcomputer Use in Science Teaching checklist as pretests and posttests to indicate their concerns about and degree of implementing microcomputers in science teaching. By the end of the second year 100 percent of the leaders and 84.6 percent of the new participants were using microcomputers to manage instruction and 92.3 percent of the leaders and 66.7 percent of the new participants indicated that their students were using microcomputers to learn science. The profiles of the leaders and new participants on the Stages of Concern Questionnaire changed from one typical of non-users toward one appropriate for users of an innovation. (Author/MVL)