The use of mentoring within teacher education has become more common in recent years, however, there still seems to be a lack of research about formal group mentorship models as a pedagogical process. In my study, I presented knowledge about how a formal group mentorship model used during a teacher education program at a Swedish university has affected the student teachers' professional development. The findings suggest that nearly all the student teachers describe the mentoring group conversations as beneficial as they have contributed to a strengthened socialization, identity and/or teacher role, a possibility to share experiences, hear others perspectives, and get support in the process of linking theoretical educational content and teaching activities. A few students expressed that the mentoring program has not contributed at all to their professional development.