The management of each school unit is the greatest challenge that a school principal is called to face, as soon as he is required to combine leadership skills, broad skills, efficiency, ingenuity in dealing with crises that arise daily within a school community, in parallel with and combined with the culture that he is called to shape but also, to be a role model, both for his colleagues and for his students, as the main person in charge, of this picture of society. Thus, the purpose of this study is to determine whether the mental resilience and complex psycho-emotional skills possessed by a school principal, help him to adequately cope with the duties and responsibilities defined by his role.The study focuses on primary school principals, this means to kindergartens and primary schools that are the core of compulsory education in Greece, having the largest number of students per school unit, and therefore their management seems to be particularly demanding. The sub-objectives of this study are to highlight the skills and weaknesses that the managers face during the carrying out of their duties, their roles and responsibilities, as well as the tools they use to perform their work effectively. The sample of the study will be the principals of formal and special education units of a specific region in Greece, while the analyzes will be obtained through the respective questionnaires and the relevant reports of the participating principals. The results of the present study can be used for further investigation of the mental reserves and the mental involvement of teachers-principals.