The document discusses a study on the role of secondary school principals in leading curriculum change with the introduction of a new national curriculum in New Zealand. It analyzed case studies of four early adopting secondary schools. The study found the principals shared common leadership capacities including a passionate focus on learning, the ability to develop and articulate a collective vision, commitment to professional learning, establishing a supportive community for change, and aligning resources to support curriculum change. The principals saw the new curriculum as an opportunity to refocus their schools on the nature of learning and skills for the 21st century. They emphasized examining the broad principles and vision sections of the new curriculum document rather than just changing subject delivery.