The Effect of Postsecondary Educational Institutions on Local Economies: A Bird's-Eye View

Over the last 50 years, nations worldwide have established higher education institutions to stimulate local economic growth. However, empirical evidence on local economic outcomes is still scarce, mainly because of a lack of adequate data. This paper provides evidence on the expansion of branch campuses in Tennessee and Texas, two states that are representative of the underlying patterns in the U.S. as a whole. As we expect the economic effect to be very localized, we use a novel and highly disaggregated proxy for regional economic activity based on daytime satellite imagery. Applying three panel estimation methods - traditional difference-in-differences (DD), heterogeneity-robust DD, and instrumental variables (IV) - we find positive associations for Tennessee and Texas in all estimations. In Tennessee, the traditional DD approach yields an increase in GDP of 1.4 percent after a campus opens (according to our most conservative estimate) and is driven by two-year branch campuses. In Texas, this effect amounts to 5.9 percent, with both two- and four-year branch campuses contributing to it. In our IV estimations, we take advantage of local taxing regulations that influence the decision to open branch campuses in certain locations but not the local economic conditions. We use this exogenous variation to estimate causal effects and find an even larger positive effect of 12.5 percent for the most conservative estimate. Given the widespread use of higher education expansion to induce economic growth, particularly in rural areas, this paper contributes important evidence on the economic impact of such campus openings on regional economic activity.