Abt’s Sebastian Lemire, Laura Peck, and Allan Porowski reflect on the evolution of the field of evaluation. Their article examines recent developments and trends in the field of evaluation. The evaluation tree—whose branches focus on methods, use, and valuing—serves as a metaphor and situates evaluation within the broader public policy analysis forest. The article considers the central role of evaluation—and other types of knowledge production—in providing actionable evidence for use in public policy and program decision making.