Prior research on environmental and sustainability education policies has largely focused on the international to national policy uptake. This article explores such policies at the subnational level in a fragmented education system. Over the past two decades, a growing number of school districts in the United States have enacted sustainability-oriented policies through the implementation of simultaneous efforts to green their facilities and provide related educational programming. This article explores the breadth of this approach in the 200 largest school districts in the country. In examining policy predictors at the district, municipal, and state levels, the study combines National Center for Education Statistics data and information from a systematic web scan. Using logistic regression, the analysis is grounded in an expanded Advocacy Coalition Framework and reveals four main findings. First, school districts under mayoral control are more likely to have a policy than districts governed by a school board. Second, the study underscores the interconnectedness of these policies with the sustainability efforts of the municipalities they are located in. Third, school districts located in large cities are more likely to have a policy. Fourth, a strong environmental movement in the state is associated with the presence of a policy.