The computer assisted instruction (CAI) program studied was implemented in eight elementary and four middle schools. The drill and practice program focused on reading and mathematics skills using a computerized curriculum developed by the Computer Curriculum Corporation. Students, qualifying under Title I guidelines, in grades 3-7 were provided with ten minutes of practice daily. The weight of the data support CAI. Students made at least a month gain per month of instruction on the computer curricula; middle school CAI students made significantly higher standardized test gains than did non-CAI students. Both CAI and control programs were equally effective in achieving reading gains. Elementary mathematics gains generally favored CAI students. Elementary teacher responses to questionnaires indicated that the teachers perceive CAI as beneficial to student achievement; middle school teachers were less positive but still moderately supportive. Student responses to questionnaires indicated that they perceived CAI drill and practice as personally beneficial and as an enjoyable activity. (Author/IRT)