This article investigates transformations in public service education over the past 50 years, specifically: How have organizational forms evolved, and what lessons can we draw from that evolution? The organizational form construct originates in population ecology theory. We draw from a variety of evidentiary sources in answering the research questions, specifically extant literature, quantitative analysis of longitudinal data about organizational forms, and interviews with public service education opinion leaders. Among the findings are that formal structures, program activities and delivery, and the norms that underpin public service education have changed significantly over time. Organization environments influence organizational forms in public service education. Stand-alone university units, typically colleges and schools, offering a comprehensive portfolio of teaching, research, and service are increasing and have become a preferred form for public service education. Educational leaders in US universities should note emerging organizational forms as they seek to adapt to changing environments.