In quest of useful models for educational systems

Analytical flow models are examined as a means for describing the performance of an educational system. Enrollment functions based on specified input functions are developed for a single grade for four special cases. A standard form for approximation is introduced and its use described. This leads to the proposition that complex systems can be fabricated of modules defined in terms of these standard approximations. Applications of this approach, and problems expected in its use, are discussed, including the question of quality of the educational process. The paper concludes with some brief comments on measurement and evaluation of performance.