Since Luxembourg became independent in 1839, practically the entire political, economic and intellectual elite of the country has been socialised abroad. It was only in 2003 that the Grand Duchy set up its own university; before then, young Luxembourgers had to study in foreign countries. Over the past 150 years, Luxembourg has thus experienced exceptionally lively student migration. This migration is almost unique in Europe; however, academic research has paid little attention to the consequences of the migration experience of whole student generations on Luxembourgish society. The data presented in this paper demonstrate that migration has opened up chances for participation and access to positions of social power, while at the same time the networks of students became an instrument of social exclusion. Thus, the migration experience over the past 150 years not only led to a strong degree of social-cultural cohesion within the national elite; paradoxically, international student mobility has also had deep effects on the preservation of national identity. (Contains 5 figures and 88 footnotes.)