Already available inexpensive computers with fast printers could significantly reduce the size and complexity of the task of individualizing instruction. A computer-based system could be designed to store and analyze student characteristics, compare relevant factors with instructional objectives, and prescribe learning activities selected from a bank which reflected the characteristics of the school's staff, facilities, equipment, materials, and available time. Teachers today are prepared to provide for individual differences but may become frustrated because of restrictions imposed by current planning and organization systems. Computer-based lesson planning could help match learner readiness and learning activities to use large-group instruction more effectively in individualizing, and provide faster, more valid analyses of the relative value of various learner characteristics for planning instruction. Implementation of a computer-based system will require new staffing configurations and consideration of cost effectiveness, the issue of alienation, and the need to provide heterogeneous group activities to teach group process skills and attitudes. (LMM)