This document reports on a project designed to develop an assessment collaboration between medical schools in both Australia and the United Kingdom. The project was funded by the Office for Learning and Teaching (OLT), utilising surplus funding from a broader assessment collaboration project – the Australian Medical Assessment Collaboration (OLT ID12-2482). The Global Health Assessment Collaboration (GHAC) involved five universities in Australia and the United Kingdom (UK). It developed an assessment framework and item specifications, undertook assessment item drafting workshops, built in a process of review and resulted in the development of a focused suite of assessment items. This report provides an overview of the processes undertaken in developing this collaboration. It supplements the other main output of the work, an Assessment Framework for Global Health.