Changes and processes in modern societies, migrations caused by the globalization and heightened, are putting at present school reality, as well as educational media and their research, amongst crucial issues of the global discourse about the cultural diversity. This thesis was an inspiration of the idea of. Project under the title: Cultural Knowledge in the Educational Media. Comparative Analysis of Poland, German and Belarus as the Cases of Societies with Different Multicultural Experiences, a team drew up researchers made interested in the phenomenon of the cultural diversity, with special taking into account the situation of creating the cultural knowledge by an chosen educational systems. The project was submitted by the Alcide de Gasperi University of Euroregional Economy in application for the grant (NCN/ OPUS-8 about the number: 278648 2014). The basic goal of the project is to extend the ways of identification and overcoming intercultural barriers. Among the latter there is a lack or distortion of the cultural knowledge, deficient stereotypes, prejudices that permeate various instruction aids (textbooks, e-textbooks, wide range of other available teaching materials etc. as well as official teaching programmes). The original and innovative research intention of the project will be the presentation of the social construction of cultural knowledge as well as an attempt to construct theoretical models based on the comparison of the three social-cultural systems that are the cases of the societies with different multiculturalism experiences (Poland, Germany, Belarus) basing on the information that is found in the school educational media. Such comparative analysis for the sake of the theoretical model formulation has not yet been carried out in a systematic way therefore it remains still of great interest for the academic research.