One of the aims of this paper was to show how theatre is represented as a medium in primary schools within the subject Croatian language. The media surrounds us in all aspects of life, and children need to be taught how to critically think when using media. Numerous positive aspects of media influence the development of tolerance and inclusion in primary schools. Theatre as a media also influences the development of creativity, and the availability of various video or pictorial media in education enables students to have different teaching experiences. Another aim was to show how Zagreb's Žar ptica City Theatre fulfils its artistic and educational purpose for its audience, which has been proven at the end of this paper. This Zagreb theatre has a rich repertoire that provides children, as an audience, with numerous experiences and knowledge. Also, students are culturally educated, and they develop an awareness of the performing arts. Theatre is a cultural institution that is used to conduct various performances of performing arts. They encourage the development of the performing arts, and at the same time enrich the audience involved in this process. The history of theatre begins with various rituals and dances as early as the 6th century BC. What was of great importance then, is still important today – the space of performance (the stage), the space for the audience, a text, performers and costumes. The founder of children's drama literature is considered to be Gottlieb Konrad Pfeffel, whose players were performed by children for the other children. In the 19th century, children's theatre began to develop in Russia and in the United States of America, but also in the territory of today's Republic of Croatia.