This case study examines the Pacific Islands Literacy and Numeracy Assessment (PILNA), which has developed as a regional model designed to enable the negotiation of a high degree of consensus among the participating countries. Commitment to a collaborative approach pervades all aspects of PILNA, from governance, operation and development through to data sharing, reporting and dissemination of results. The efforts undertaken to reach consensus, enhanced transparency and public dissemination of results have stimulated countries in the region to investigate how data on student learning outcomes may be used and shared in a common endeavour to improve the standards of education in the Pacific Islands.