This study examines teachers' perspectives of inclusive practice for students with autism spectrum disorders in Irish post-primary schools. Semi-structured interviews were conducted with 15 teachers nationally. The data were thematically analysed according to Braun and Clarke's framework, employing a deductive, constructionist, analytical approach based on Ajzen's Theory of Planned Behavior. Conclusions drawn include: In principle, teachers espoused the value of inclusion however, their practice evidenced little in terms of agency to effect inclusion. They attributed barriers experienced to external factors. Authentic inclusion requires adequate resourcing and attitudinal change in order to effectively transcend rhetoric and positively influence practice.