Many physical education (PE) teachers have been challenged by the shift from teaching in primarily ethnic homogenous contexts to multi-ethnic (ME) classes. Teachers in secondary schools often experience difficulty in class management in such classes. This difficulty may limit their ability to create a positive student--teacher relationship and may result in practices of inclusion, exclusion and marginalisation. The purpose of this paper was to explore how Dutch PE teachers construct their relationship with their students and manage differences in ME classes. Using video stimulation, we interviewed 11 Dutch secondary school PE teachers about their teaching and managing of ME classes. Findings showed that these teachers tended to target a specific group of boys in their teaching and class management. In addition, their class management seemed to be based on an invisible norm about appropriate student behaviour.