The PSIPSE is led by a group of private donors including Mastercard Foundation, Echidna Giving, Dubai Cares, and an anonymous donor, with fiscal sponsorship from New Venture Fund, a 501(c)(3) public charity. Past donors included The John D. and Catherine T. MacArthur Foundation, Intel Foundation, Human Dignity Foundation, and Elma Philanthropies. The PSIPSE is putting collaboration into practice, sharing learnings about grant-making, implementation and evaluation across different organizations, including donors, grantees, and researchers. The PSIPSE has permitted individual donor members to multiply their reach by bringing more resources to bear on the issue of secondary education in target geographies, engaging policy makers to deepening the impact of country-level work, and accelerating both field knowledge building and learning among grantees.