Sports school, as one of the forms of an organized physical exercising, is an ideal start for practicing physical activity. The purpose of this research was to determine how much physical exercising in the sports school affects the development of motor abilities of preschool boys. The sample of 51 boys at the age of 4-7 included in the program of sports school in Novi Sad, as well as 48 boys at the same age engaged in the regular program of physical activities in a pre school institution have been subjected to 7 motor tests. According to the results of this research, a conclusion can be drawn that all assessed mot or abilities of experimental group have improved after the sports school treatment, which was not true of the control group. Such a difference is reflected by effects of one-year exercising treatment, based on the results of MANCOVA, which is an indicator of an extent to which most of boys earlier engaged in sports school exercises have better developed motor abilities than their peers. .
