Free time provides great opportunity for cultural and creative development of the pupil's personality. In the education system, free time is usually spent through extracurricular activities, which the pupils use to fulfil their needs and interests and exhibit their specific skills and abilities. The school library is a place where pupils find answers to their questions, inspiration, research and where they develop various forms of literacy. It enables every pupil to create their personal space for studying and spending free time. The role of the school librarian is crucial in this aspect as they are the ones guiding, advising and directing the pupil to uses various sources of knowledge. They facilitate the development of the pupil's expressive abilities through creative workshops, literary meetings, projects, working with young librarians and other activities, all in collaboration with teachers and leaders of various extracurricular activities. Nowadays, the role of the school librarian is gaining in importance and social value because their role is no longer one of mere mediator between the author and user; instead, they also assume the role of learning assistant, facilitator and mediator. In line with the mission and tasks of the school library, the school librarian also designs activities for their users’ free time. In order for these activities to be carried out in a quality manner, we should offer content that the pupils can select individually in line with their interests and abilities ensuring their personal development. By taking part in extracurricular activities, the pupils develop their social competencies, their creativity is encouraged, values are built, while their sense of community and connection to school is deepened.