In this article Elias Hemelsoet questions the way irregular migrants are approached in educational policymaking. In most cases, estimations of the number of irregular migrants serve--despite large methodological problems--as a starting point for policymaking. Given the very diverse composition of this group of people, the question is whether residence status is an appropriate benchmark for dealing with the social problems related to these people. There seems to be a homogenizing tendency at work that reduces the complexity of irregular migration. Preferable distinctions are overlooked or even denied. Inclusive education seems to provide an alternative that does not reduce individuals to a group they belong to, claiming that differences only matter at the individual level. The question is whether such an approach entails a new form of homogenization. Using the case of Roma people, Hemelsoet argues here that group differences do matter for educational practice, theory, and policy. Qualitative data on the social practices of groups can help provide insight into the particularity of situations. This "insight" or "understanding," in its turn, is a requirement in order for policymakers to make well-considered choices.