This article explores how headteachers/principals engage in social justice leadership practice using data gathered from the Scottish and American contributions to the International School Leadership Development Network's (ISLDN) research on social justice leadership. While the literature focuses on high-level strategies to address issues of equity there is limited discussion of the day-to-day practice of social justice leadership. In fostering inclusive cultures, the day-to-day practice of headteachers/principals is critical in challenging low-level forms of discrimination, micro-aggressions, which create hostile environments for diverse groups of learners. The article considers the concept of 'leadership practice' by examining the notion of relational leadership to highlight the social processes of 'organising activities' of leadership. In this, we focus on caring practices and explore these through four case studies of headteachers/principals recognised for their social justice leadership. A framework of Noddings' caring practices of modelling, dialogue and confirmation as relational organising activities, is used to begin to capture the day-to-day practice of social justice leadership.