Promoting supervisees' self‐reflexivity is an integral component of systemic family therapy supervision. This includes facilitating thinking about the influences of social differences. The article describes an exercise designed to facilitate exploration of participants' relationships with different aspects of social GGRRAAACCEEESSS (SG). The exercise consists of mapping the influences of different aspects of SG and ascertaining how some of them come to be more privileged than others. It is proposed that the exercise is used in the context of a supervision group, where the supervisees and supervisor share their personal and family of origin stories related to SG. Team members' reflection offers a further opportunity for learning. Feedback from supervisees has been sought on how this exercise impacted on their practice. The potential benefits and caveats are discussed. Practitioner points Promote self‐reflexivity on issues of differences Explore supervisees' relationships with aspects of social GGRRAAACCEEESSS