ABSTRACT The growing emphasis on inclusive education over the last decade has placed renewed focus on curriculum and the extent to which standard or different curricula should be enacted for learners with special educational needs. This paper explores the enactment process for a state-mandated, standard curriculum in Irish special schools. A two-phase, explanatory sequential mixed-methods approach to data-gathering was adopted. Phase 1 incorporated a questionnaire distributed to the principal of every special school in the Republic of Ireland (n = 133). Phase 2 consisted of a multi-site embedded case study with three special schools for children with varying levels of general learning disability. The findings illustrate how special education teachers modify the curriculum to make it more accessible for all learners and showcase the pertinence of curriculum design frameworks for framing those illustrations. The paper concludes by demonstrating the potential of a modified curriculum design framework for ensuring that learners with the most complex needs have better opportunities to access a curriculum with degrees of commonality to their peers.