Finnish youth are found to be, despite their broad knowledge, uninterested in politics and in societal participation. As a remedy, international studies suggest enabling democratic experiences in schools. This article discusses an action research project aimed at developing deliberation-based democratic practice in an elementary classroom. Results suggest that the formal deliberative-democratic practice opens up a way for pupils to productively express themselves, challenge the prevailing structures, make sense of social reality and, thus, practise skills and motivations needed in democratic citizenship. However, the teacher is argued to be in constant struggle between deliberative-democratic stance and control orientation. This tension exists in the teacher's actions and thinking and in his reflections about the contrast between the classroom practice and the overall school ethos. Therefore, this article suggests using the understanding of this tension in scrutinizing projects aiming at pupil participation and involvement.