We present findings from an in-depth study on a school-based multi-disciplinary learning community in the context of practice teaching in university pre-service education. We elaborate on one of the three predominant patterns of talk identified, the "star" pattern, and show how it created particular power relations in the discourse which eventually triggered occasions for learning in community. The community of learners consisted of 11 student teachers and a university mentor who functioned as a tutor responsible for facilitating the group discussion. The group met on a weekly basis throughout an entire academic year (23 meetings). Data collection included recordings of all meetings and semi-structured interviews with all participants including the mentor (altogether 25 interviews). Findings suggest that the "star" pattern of talk constitutes a powerful channel for promoting learning in the context of a community of learners.