The purpose of the work was to study critical thinking in teenagers during trainings. In this study, for the first time, trainings were tested as a form of psychological impact on the development of critical thinking in adolescents. The study involved 40 students of the 8th grade of "Secondary School No. 117" in Almaty. This paper proposes the development of a program of training sessions on the development of critical thinking for adolescents 14-15 years old. Adolescence is a period of personal reflection, self-education, and heightened critical thinking skills. Thus, the development of critical thinking is necessary for positive self-identification, self-awareness and personal growth.