This article studies the dialogues, agreements, and actions in defence of a fairer and more inclusive school, carried out during ethnographic research in a Spanish rural school between 2019 and 2021, the period in which an ethnographer accompanied the professional work of the school principal, also the tutor of a class group. The research is carried out from a critical approach and uses participant observation, informal interview and document analysis. During the research process, we observed and participated in the development of three major patterns for social justice and the construction of a democratic and inclusive school in the case studied: the strengthening of the opening of the school doors; the promotion of horizontality in leadership relations in the school, and the promotion of collaborative educational strategies in the classroom.