This paper presents the results of a study on the understanding of the term information literacy of primary and secondary school students, from the fifth grade of elementary school to the fourth year of high school at the local level, and who are members of the City Library in Imotski. The study examined 98 members of the City Library, through a questionnaire with a total of 25 questions. The selected sample consists of primary and secondary school students, members of the City Library because of their availability. The main objectives of our study were: to investigate, analyse, and determine how many students are information literate. That is, if students at the age of eleven to eighteen years understand the concept of information literacy in the right way. Since the misunderstanding of the term information literacy of students is present in the increased percentage, a measure is proposed of ongoing professional development of students in the spirit of the European concept of education.