Social ontology examines the nature and mechanisms in human society of concepts that pertain to various kinds of social collectivities. A pioneer in the development of this philosophical field, Mills theorised a social metaphysics of "racial constructivism" for modern philosophy in order to explain the enduring orthodoxies of its Anglo-centric dominance. This paper invokes the term, supervenience, to further elucidate the causal bearing of race on individual and social facts. Turning to the philosophy of education, the ontological bifurcation of asymmetrical racial worlds is a salient divide to which discourses of normative individual ethics, analytic critical thinking, and generalized social justice contribute. Given the pervasiveness of supervenience, in the unwillingness to traffic in the ontology of race, educational philosophy hamstrings the creative and critical dimensions of advancing education for a racially equitable and pluralistic democracy.