The article analyzes the essence and principles of formation of competencies of the head of a modern educational institution in the conditions of constant reforms of the educational process in Ukraine. The aims of article to disclosure of the content of professional competence of the school principal, on the basis of which to propose a system of comprehensive measures and monitoring of the formation of professional competencies of the head of the educational institution, as well as outline the main directions of development of the professional competence of the head of the educational institution. The methodology of conducting theoretical and empirical research included: analysis and synthesis, induction and deduction, abstraction and concretization, and systematic analysis, which allowed to achieve the goal of the study. The components of the professional competence of the school principal are considered. A system of complex measures and monitoring on the formation of professional competencies of the head of the educational institution is proposed. The main directions of development of the system of formation of professional competence of the head of the educational institution are outlined.