This research explores school belonging (SB) experiences of young people in the UK who live under the legal status of a special guardianship order (SGO). A high proportion of these young people have had adverse childhood experiences, some are care experienced. This research uses case study to triangulate the perspectives of the young people, their guardians, and designated teachers (DTs) to develop understanding of school belonging, and considers the implications for educational psychologists (EPs), school policy, and staff practice. Seven case studies were undertaken, each including a young person, their guardian/s and their school DT, resulting in 21 semi-structured interviews. A hierarchical structured approach was used in all adult interviews, and personal construct psychology techniques were used in young people's interviews. Individual case data were analysed using thematic analysis. Superordinate themes generated included identity, fitting in, diagnosis, agency, individuality and association, school's community connection, systems as obstacles, relationship and connection to others, protection and autonomy, school processes, support and features, and organisational change. The findings emphasise the broad influences on the school belonging of this group, including individual characteristics, peer and staff relationships, school processes, and the communication and interaction between school, home, and the wider community.