The term "system teaching" is used in this paper according to E. Fleming and W. Pasterniak. The author divides the systems into l. definite - workable, 2. national verbal and 3. theoretical abstract. The author also discusses the problem of systematization of knowledge according to psychology taking into account the effect law and the possibility of alternative choice of information. ; The function of learning, attitudes and abilities is shown in a diagram: the dynamism of system learning. The need of systematization results from the necessity to integrate too large an amount of information into a dynamic framework of knowledge applicable in practice.