The document outlines several learning and evaluation activities for BUILD Health Challenge participants: 1. A mid-point survey led by Spark Policy Institute that will gather anonymous feedback from core organizational partners to inform support services and future iterations of the BUILD program. 2. A Hospital Engagement Project led by Mendez Group that will interview hospital partners to understand motivations for collaboration and approaches to social determinants of health. 3. Ongoing BUILD case studies led by Mendez Group that will document collaboration processes through bi-monthly interviews with core partners and highlight best practices in multi-sector partnerships.