The study reflects the organizational aspect of the activity of psychological services in some countries of the world and analyses the peculiarities of the functioning of the psychological service established by the general secondary education of Ukraine in the conditions of the armed aggression of the Russian Federation with the help of theoretical and empirical methods, in particular, theoretical analysis and generalization of psychological practice; building theoretical approaches and organizational and methodological conditions for improving the practical activities of psychological service specialists; survey; study of methodological and reporting documentation; application of statistical data processing methods.
 The results of the research reflect the state and development of the psychological service in the education system under the conditions of martial law and the implementation of Article 76 of the Law of Ukraine "On Education". It is determined that the psychological service in educational institutions combines four components, namely: scientific, applied, practical and organizational. Aspects of the activity of the psychological service in the educational system of Ukraine are characterized, in particular, conducting scientific research on the problems of methodology and theory of practical educational psychology, researching the patterns of mental development and the formation of a child's personality; development of work methods and technologies by practical psychologists, social pedagogues, including professional training and professional development of specialists; the creation of an effective structure of the psychological education service, which ensures the interaction of all service units on subject and organizational issues. Statistical data on the number, availability, advanced training and appeal of the participants of the educational process to psychological service workers are presented. According to the results of the analysis of the work of the psychological service in the education system and international practices, it was determined that the psychological support of training, the psychological and social-pedagogical support of the participants of the educational process in the conditions of martial law is an extremely important condition for preserving and strengthening the mental health of future Ukrainian generations. Further research requires the development of the principles of management and organizational support for the work of psychological service workers established in general secondary education under military conditions, based on the best international experience.