One of the major attractions of introducing electronic technology in education has been that of providing individualized instruction. However, it has proved very difficult to obtain a representation of each student's inferred knowledge state on which to base such individualization. In this paper we present Kelly's personal construct psychology as a framework for the analysis of the educational process and educational system, and particularly for the practical determination of relevant features of the knowledge state. His notions of constructive alternativism, and the creativity cycle in particular, are both of major theoretical significance and can also be studied through interactive microcomputer programs eliciting the construct systems of students and teachers.