The objective of the survey was to find out how Polish learners of a lower-secondary school perceive religious diversity in the school context as well as in a much broader European dimension and what factors they may take into consideration concerning the issue. The analysis is based on the results of the questionnaire Religious Diversity in Europe conducted among lower-secondary students learning English as a foreign language. The questionnaire was created as a joint work of schools cooperating within the Comenius School Partnership, ‘Communication Connects Cultures through Comenius’.