This study explored the perceptions of parents and teachers regarding the differential treatment or stigma experienced by pupils with challenging behaviour--more specifically, those with behavioural, emotional and social difficulties (BESD), as well as children with visible special educational needs (Down's syndrome and/or profound and multiple learning difficulties) who frequently displayed challenging behaviour as a characteristic of their SEN. Semi-structured interviews were conducted with ten parents of children with challenging behaviour, together with 15 educational practitioners employed in mainstream and BESD schools. Findings revealed how several parents, and staff employed in BESD schools, viewed pupils with challenging behaviour as "unwanted" in mainstream schools. The remaining parents, as well as mainstream practitioners, reported the opposite and indicated that these pupils received treatment deemed to be "preferential" in the mainstream. This has direct implications for those concerned with supporting pupils with challenging behaviour in mainstream settings.