Comparing the importance of information literacy from its beginnings to the present day, it can be seen that it has become one of the basic skills that an individual must possess in order to be a quality member of society and have an impact on their future. This is also understood by the educational system, which increasingly encourages students to think for themselves, research and use the information they are interested in or need, instead of just receiving, remembering and repeating information without real understanding. This paper will present this topic through reviews of the literature on information literacy in secondary education (high schools), which is a kind of middle ground between primary (when students have less information needs) and higher education (when students are already adult members of society who actively participate in it). The first part of the paper explains information literacy itself, its importance in modern society, and describes a brief historical overview of information literacy and its development. The second part of the paper presents a review of the literature that provides opinions on information literacy in secondary schools. The second part also explains the close connection between information literacy and information and communication technologies, and the so-called lifelong learning, that is, an informal form of learning that continues beyond the boundaries of the school. The results suggest that although information literacy is represented in secondary education, it is still not at an ideal level. The reason for this is most often the lack of communication between the teaching staff and the library staff, which has a key role in the development of students' information literacy.