Les migrations étudiantes dans le système universitaire français au début des années 90

French University System has changed a lot during the past decade. On one hand, numerous studies are made at different scales to understand how it is spread in French urban system. On the other hand, fewer are research works about how students migrate from one University City to an other. This work highlights part of the opportunities to know students? migrations from databases of Ministry of Education. We can partly answer to questions like : What is measured ? How many people are concerned ? What kind of relations exists between University cities ? Classification JEL : 12,128, J60, J61, O15, O18, R12, R58