Since 2000, the number of students trained abroad has increased 100%. This statistic shows how not only many students but also how future employers value this training. It gives students an additional skill, which can be called "internationality". Accordingly a large number of countries intend to rapidly increase the number of students studying abroad. This trend leads to a model of international student mobility that would be perfect if, first, all students could benefit from it; second, if this model did not create some inequalities; and finally, if it did not cause some distortions in the world that may be economic or academic in nature. This paper shows that this is not the case. It is therefore important to analyse these phenomena in order to find solutions to improve the current model of international student mobility.