This paper discusses the limitations and potentials for dialogue in religious education (RE) classes on the basis of observations of Estonian RE lessons. I investigated how the way of asking questions contributes to the dialogue in the classroom. Additionally I investigated how students' readiness to engage in dialogue is influenced by others' responses to their contributions. I examined what happens in a classroom, by observing and analysing patterns of interaction in RE lessons in two schools. Video-ethnographic data collection was combined with stimulated recall. Incident-analysis stemming from conversational analysis was used to interpret the data. On the basis of these analyses and interpretations, we can conclude that the teacher-centred habit of instruction is a main impediment to dialogue. A teacher's positive reinforcement of answers does not contribute to dialogue between students but rather to the assumption that the correct answer has already been given and to reliance on the teacher's arguments. Also, open questions do not work always as facilitators of dialogue, but rather can be felt as intimidating. (Contains 1 table and 1 note.)