We employ a policy assemblage, mobilities, and mutations framework to analyze the geographies that constitute and reflect educational policy circulation at the regional or supranational level in trans-regional regimes and/or quasi-federal polities such as the European Union (EU) and the Caribbean Community (CARICOM). Recognizing that policies are mobile in a fragmentary fashion as they are re/dis/assembled in specific ways, places, and purposes, we move beyond methodological nationalism and pay attention to the make-up of policies as they are in motion and the places they affect. In other words, using the trans-regional and/or quasifederal level, we juxtapose the tensions between policy as fixed, territorial, or place-specific against the dynamic, regional, and relational policy elements. Methodologically, we use a comparative federalist lens to trace and examine the distillation, translation, and mobilization of education policy across and between quasi-federal polities. In this sense, epistemologically, we further explicate the manner in which such policy instruments move across the various interconnected units and sites composing these federal-type entities, while (re)territorializing and deterritorializing what we construe as complex educational assemblages. We show that contra to the extant literature, in Europe/EU and the Caribbean/CARICOM, movement, and mobility involves the connectivity between policymaking sites, and policies arrive at their destination in the same form as they appeared elsewhere, allowing for forms of discursive isomorphism.