In today's modern world, the school library accomplishes various pedagogical activities that include teaching of different forms of literacy. One of these literacies is a political literacy, which represents an important way of literacy for the functioning of a democracy as a political order, and is a prerequisite for the successful participation of individuals in the society. To educate a well-informed individual who can participate in decision-making processes in society, the school library should be one of the main places that cares and prepares its users for important social roles. That is why the goal of this research was to examine the attitudes of high school graduates about the role of the school library in strengthening political literacy, and to determine whether these students do differ in their assessment of the role of the school library in fostering of political literacy, regarding gender and school performance. In the work was used the survey method, and total of 202 fourth-grade students from three secondary schools in Split participated in the research. Out of a total of five hypotheses, two hypotheses were confirmed by this research. The results of the research point to the existence of a statistically significant difference in the assessment of the role of the school library, when promoting political literacy regarding the school performance of students, with that for those students that are manifested with very good and good school performance - better assess the role of the school library in strengthening political literacy. Additionally, the obtained results indicate that work should be done on the visibility of school library activities, because in most cases students do not sufficiently recognize the school librarian as a credible source of information on political topics, as well as the fact that they less perceive the school library as a place where to them interesting lectures are organized that can help them in acquiring political knowledge and opportunities for political participation.