High requirements for professional training of Defence Specialists were and remain the main guarantee of successful functioning of any military structure. Continuous improvement of the educational process in higher military educational institutions is the basis for its transformation to the conditions of the current situation in the world. In the paper, the authors offer an option to determine the number of classroom hours. This project describes approaches to creating a new, modern system of classroom hours, which ensures the continuity of improving the level of professional competence of higher military educational institutions using the nonlinear mathematical model of Weibull-Gnedenko. Organisational and methodological problems were analysed. Because of the analysis of methodological literature, the points of view of teachers and methodologists are compared on the modern methodological work, and a mathematical model was used that established the relationship between the training level of students and the number of academic hours. The proposed model divides the educational process into initial and main periods. The learning process strengthens in the main period. There is a slowdown at the beginning and end.