The article reveals the content of the mental health of leaders  and teaching staff of educational institutions in war time, which is understood as their ability to cope with every day stress of life in the war time, to establish relationships with people in war time, to effectively carry out professional activities aimed at helping their organization and society during the war period. On the basis of empirical research, a number of problems related to the mental health of managers and teaching staff of educational institutions in war conditions, which are characteristic of a significant number of interviewees, have been identified. The most pronounced are problems related to the ability to counteract stress, followed by problems related to the ability to carry out professional activities (to ensure its effective organization and productivity) and in the last place there are problems related to the ability to establish relationships with people, primarily, in the process of professional interaction. At the same time, it was established that for all the components of mental health of the vast majority of interviewed leaders and teaching staff of educational institutions, despite all the complexity of the war period, a positive orientation of life is inherent (a vision of life prospects, faith in life, a positive attitude towards one's activities, the importance of student learning, etc.). The obtained data indicate the need for the development and implementation of special technologies aimed at preserving and maintaining the mental health of managers and teaching staff of educational institutions in war conditions, which can be used at the individual, group, organizational and societal levels.