This paper examines the context of school exclusion in Northern Ireland. In doing so, we explore the political economy of exclusion, focusing in particular on the intersection of perspectives between four key stakeholder groups: principals (n = 7) and teachers (n = 31) in mainstream schools, representatives from an official education body (n = 8), and staff from Education Other Than at School (EOTAS) Centres (n = 4) who provide alternative education for young people who have been permanently excluded from mainstream schools or who have social, emotional, behavioural and well-being needs that cannot be met in mainstream schools. The study used qualitative data from individual and small group interviews and focus groups with the stakeholders mentioned above. School exclusion has been under-researched in Northern Ireland and this paper addresses this gap. Additionally, official exclusion data point to relatively low levels of temporary and permanent exclusions compared with the other jurisdictions of the UK, though why this is so remains unclear. The analysis draws attention to the use and prevalence of informal or unofficial school exclusions; claims of limited official support for schools; restricted collaboration between mainstream schools and alternative education; and a general consensus around limited resources to support pupils at risk and to train teachers.