This study analyses the evolution of the main indicators of students’ high school performance at the high school graduation exams (Romanian Baccalaureate) from a geographical perspective. Both participation and pass rates fluctuate depending on the type of high school, gender and place of residence. Behind these quantifiable characteristics there are significant disparities in (in)equality of educational opportunities influenced by the questionable efficiency of the education system in providing quality education to every student, regardless of their parents’ financial background. Although the upper cycle of secondary school (11-12th grades) is not legally compulsory, successful graduation is essential for the economic, social and cultural insertion of the future adults in a functioning society. The lack of performance of some high schools and vulnerable groups of students, who face problems of accessibility, motivation, opportunity, and financial support, as well as the worrying numbers of exam absentees, must be brought baccalaureate to the permanent agenda of the policy makers, not exclusively during the exam period. The complexity of the official data from 2015-2022 has allowed the geostatistical analysis of school performance, highlighting the deep discrepancies within the system, specifically between urban and rural students, the administrative and economic hierarchy of the locality and the prestige of the high school attended. The insights of this analysis can be used to identify optimal solutions to enhance the research about educational disparities.