Discusses a Houston Independent School District project that investigated the effectiveness of providing computers in computer-student ratios of 1-1, 1-two, or 1-three. Describes curriculum modifications and applications to drill and practice, tutorials, management, simulation, games, computer literacy, programing, and word processing in classroom instruction. (Available from the Association for Educational Data, 1201 16 St., N.W., Washington, DC 20036.) (EAO)