Case studies about managing evaluation are examined for perspectives on expertise in managing evaluation. There are lessons on a geography of managing, managing as organizational work, the notions of "competency" and "expertise," and managing evaluation as professional work. Dreyfus and Dreyfus (2004) offer a framework for an introductory discussion of the essentials of expertise, as does Ryle's distinction (1949) between "knowing that" (about) and "knowing how" (to). (Contains 1 figure.)