The recognition of the DP (diploma programme) for university admission is crucial for the development of International Baccalaureate (IB) schools and the expansion of the IB network worldwide. In an era of higher education (HE) massification, accompanied by high failure and dropout rates, intense debates on access to HE are taking place in many countries. It is within this context that the IB organization struggles for the recognition of the DP for admission to universities throughout the world. Through a global comparative approach, this study analyzes the 'DP-HE admission' assemblages in Argentina, Canada, Chile, Spain and the United States. Based on interviews with senior IB officials and principals at the head of IB schools associations, this study intends to understand the way the IB network fosters the recognition of the DP for HE admission. The recruitment of new allies to the IB network includes a myriad of negotiations and translations whose results are unpredictable. In Argentina, Chile and Spain, the efforts for DP recognition failed but in Canada and the United States, the DP-HE admission assemblage shows that by translating the skills acquired by DP students as a way to improve retention rates at universities increased their support of IB programs.