The transition to the knowledge-based economy allows the issue of sustainable development to be approached through the evolution of the education system. The process of digital transformation aims to improve the education and skills that manifest differently a  regional level due to  economic and social factors differently integrated from one county to another. In this context, the paper presents the way in which the performances obtained after taking the baccalaureate exam were influenced on the one hand by the development  process of  IT infrastructure of high school education, and on the other hand by the share of teachers per 100 students. The analysis was performed based on data from development regions and the counties included in Macro-region 4 in Romania, through correlation and regression methods, thus highlighting the efficiency of the relationships between the parameters of education systems.