How can scholars trace the global production and circulation of educational policies? The vertical case study incorporates three elements: "vertical" attention across micro-, meso-, and macro-levels, or scales; a "horizontal" comparison of how policies unfold in distinct locations; and a "transversal," processual analysis of the creative appropriation of educational policies across time. The second half of the article draws upon an ethnographic study of learner-centered pedagogy in Tanzania to exemplify the vertical case study approach. [educational policy, actor-network theory, Tanzania, learner-centered pedagogy, multisited ethnography] How do extra-local forces shape educational policy and practice, and how can these be studied? How can scholars trace the global circulation and production of educational policies and their impact on practice? In this article, our principal aim is to explain and illustrate a promising methodological approach for researching educational policy that attends simultaneously to its global, national, and local dimensions. We contend that new approaches to policy studies in education are necessitated by changes in the historical, political, and spatial relations of actors and actants in policy networks. Although theoretical advances have been made by scholars who conceptualize policy as social practice, methodological clarity as to how one might explore the complex assemblages of power that come to bear on policy formation and appropriation across multiple sites and scales has heretofore been limited. We offer the vertical case study as an approach that maintains the centrality of ethnography-specifically multisited ethnography-in the study of educational policy while expanding its scope to the non-local level by tracing a transversal process or set of relations that spans local, national, and global scales.We call this approach a "vertical case study" due to our initial conceptualization of it, and the term has gained traction in our allied field of comparative education (Vavrus and Bartlett 2009, 2013). However, it is essential to clarify from the outset that this approach incorporates vertical, horizontal, and transversal elements. First, the vertical axis insists on simultaneous attention to and across micro-, meso-, and macro-levels, or scales, which constitute the verticality of comparison (see also Bray and Thomas 1995). Second, the horizontal axis compares how similar policies unfold in distinct locations that are socially produced (Massey 2005) and "simultaneously and complexly connected" (Tsing 2005:6). Third, the approach emphasizes the importance of transversal comparison, which historically situates the processes or relations under consideration and traces the creative appropriation of educational policies and practices across time and space. The transversal element reminds us to study across and through levels to explore how globalizing processes intersect and interconnect people and policies that come into focus at different scales.Consistent with George Marcus's mult...