This report presents summative evaluation results for a National Science Foundation funded project entitled Grounding Institutional Partnerships in Structures for Broader Impacts Design (BID). The project represents a collaboration between five institutions: Institute for Learning Innovation, The STEM Research Center at Oregon State University, Scicenter, University of Washington-Bothell, and University of Wisconsin-Madison. BID aimed at creating an inter-institutional structure and toolkit to assist higher education institutions (HEIs) and informal science education organizations (ISEs) in developing sustainable institutional partnerships through collaboration around the design of informal STEM education-based Broader Impacts (BI) experiences. The project built upon the Portal to the Public (PoP) framework, bringing together research support professionals, STEM education professionals and Principal Investigators at HEIs with practitioners at ISEs (i.e., BID partners) to enhance BI experiences for the public by leveraging human resources through intentional coordination and partnerships. This report addresses the impact of this collective work, serves as a record of the project, and as a resource for future partnerships that support BI
