Introduction. The nature of religious education or religious instruction may vary in different societies. The confessional religious education, namely catechesis, dominates in public schools, as the Roman Catholic Church continues to hold a strong position in Poland. Considering the fact that 94.2% of elementary school students receive the catechism, the author of the paper was interested in whether the Polish elementary schools teach about different religions, religious diversity, and religion as a cultural phenomenon? Aim. The aim of the presented paper is to analyse the National Curriculum and catechesis curriculum for elementary education in order to verify its content referring to religion in terms of cultural phenomenon. Methods. The qualitative content analysis of National Curriculum of elementary school was used in order to find out where (which school subject) and how (which context) religion as a cultural phenomenon is included in the aforementioned document. Results. The analyses indicate that the problem of religion as a cultural phenomenon is marginalized in the National Curriculum and catechesis curriculum for elementary school.