Disparities in educational outcomes between Māori and non-Māori students remain a pressing concern in New Zealand. Recent policy documents framed through notions of 'effectiveness' champion culturally responsive pedagogies (CRPs) to address the achievement gap in mainstream secondary schools. Here, I interrogate this claim through close analysis of the Te Kotahitanga project led by Russell Bishop which, despite extensive government support, including a $42 million investment to restart the initiative, has limited conceptual and empirical grounding. I then consider broader understandings of (...) effectiveness that might better capture the benefits of CRPs but argue, drawing on social realist criticism, that some practices may paradoxically lead to poorer educational experiences for many Māori students by restricting access to disciplinary knowledge. I conclude that CRPs have variable effectiveness and are unlikely – on their own, at least – to greatly improve educational outcomes for Māori. (shrink)