Teachers plan and conduct mathematics teaching, and hence, are often seen as the key to change mathematics teaching towards a more equal and just activity. However, there are signs that other actors are also influencing the planning and thereby the mathematics teaching. To explore the influence of others, a focus group study was conducted and results from one of the group discussions are presented in this paper. The results show that there are individuals who are actors in the process of planning, but also organizational and material actors. There are also direct links from the actors that the teachers express to others, which means that these also influence the planning and the mathematics teaching. Hence, changing mathematics teaching is not just a matter of teachers.