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Overrepresentation in exclusionary school discipline is extensively documented for certain groups of students, particularly students of colour and those with disability, yet while these groups may overlap, policies that aim to address disproportionality tend to consider equity factors in isolation. The majority of research on overrepresentation, intersectionality and disproportionate risk has been conducted in the United States, yet there has been limited research within an Australian context despite reports of the overrepresentation of students in priority equity groups: students with a disability, Indigenous students and those living in out-of-home care. To disentangle the intersectionalities between these three priority equity groups, we created seven independent groups in which one or more of these factors was present. We then compare each of these seven groups to one referent group (not Indigenous, no disability, not in care) to examine trends in Queensland state school suspensions from 2016 to 2020. Findings show that students in the seven groups were issued suspensions at rates disproportionate to enrolments, in contrast to the referent group, with the risk of suspension increasing with greater intersectionality. Further analyses highlight disability as a common underlying factor, both in terms of increasing risk of suspension and in its repeated use, particularly for students recorded as receiving adjustments in the Social-Emotional category. These findings underscore the need for more nuanced reform and support strategies that can better account for the intersectionalities between groups.