Over the last five years, USAID Advancing Nutrition has supported locally-led development through our New Partnerships Initiative (NPI) program, and country-funded activities in Kenya, Burkina Faso, Nigeria, Mozambique, and the Kyrgyz Republic. This brief summarizes what we learned about effectively measuring organizational capacity and provides suggestions for supporting partners’ growth through our organizational development programming. This learning brief complements previous briefs on designing and measuring effective capacity strengthening, measuring training programs, what works with local partners, and approaches to systems-level capacity strengthening.