  The appropriate comparison class is determined by normative principles. American states are obligated to provide their black citizens an education that is no worse than what they provide to their white citizens; any comparison with the citizens or subjects of other countries is beside the point. It should also be noted that, whether or not American states have an obligation to provide an education to any of their citizens, if such states provide an education to their white citizens, then it is discriminatory for the states to fail to provide an equally good education to their black citizens. And if states do have an obligation to provide an education to all their citizens, then giving an education to whites but not blacks would constitute a double-wrong against blacks: the wrong of discrimination, which depends on how blacks are treated in comparison to whites, and the wrong of denying blacks an education, which does not depend on how whites are treated.