This article presents the results of an experimental study on the formation of stress resistance of adolescents by means of stage art in the institution of basic and additional education. The purpose of the scientific research was to identify and substantiate the essence of psychological and pedagogical potential of stage art as a set of conditions of positive influence on the formation of stress resistance of schoolchildren. At the initial stage of the scientific research the peculiarities of stress resistance of adolescents engaged and not engaged in stage art were identified. This meant the determination of personal and situational anxiety, anxiety, individual-psychological features and propensity to aggressive and depressive behavior of adolescents. In the course of the experimental study, significant differences were found in the indicators of stress tolerance, anxiety, depression and aggressiveness between the adolescents involved in stage art types and the control group of adolescents not involved in stage art types. Research methods: a test to determine the level of personal and situational anxiety of the subjects (Spielberger-Hanin scale), Personality scale of anxiety manifestation" (J.Taylor, adaptation of T.A.Nemchinov), The scale of teacher's evaluation of individual-psychological features of students (J. Streliau). The obtained experimental results testify to the presence of high and average stress levels in teenagers who are not engaged in stage arts. But the average level of stress was also revealed in those engaged in various types of stage art, but to a lesser extent than in the first respondents of the control group. On the basis of the research data it is possible to draw a conclusion about high exposure to stress and low level of formation of stress resistance in teenagers because of the lack of psychological and pedagogical conditions of support of teenagers in their occupation of various kinds of stage art.