The article is devoted to the problem of formation of social health in younger schoolchildren by the psychological service employees in the system of post-graduate education, namely, the development of criteria and indicators for the possibility of conducting empirical research.
 The relevance of the raised issue was established on the basis of ascertaining the objective deterioration of the components of health: spiritual, mental, social against the background of socio-economic problems, pandemic, military operations, etc.
 The method of analysis of scientific sources was used during the research to study the process of social health formation of various categories of children and adolescents, therefore, the development of a criterion and diagnostic base for assessing the readiness of the implementation of means of social health development in younger schoolchildren by employees of the psychological service, which confirms the need for such theoretical and practical activities.
 The analysis of scientific research and practical experience on the issue under study made it possible to develop and justify the following criteria and indicators for its assessment: cognitive (formation of professional competences for the implementation of proper health care concept in younger schoolchildren and ideas about the implementation of acquired health care experience), value-motivational (valuable attitude to life and health, including the motivation to maintain corresponding lifestyle) and professional-activity (the desire for creative and professional self-realization, health-preserving behavior).
 The regularity of the selection of indicators is determined directly by the process of training of psychological service workers in the post-graduate education system, which should contribute to the increase of knowledge and experience of implementing the acquired practical knowledge, considering the motivational and value components. In turn, psychological service workers would form their own subjectivity as guides of modern knowledge about health preservation, as well as positive motivation for self-development and self-improvement, which changes their professional behavior in the direction of health preservation.
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