The theoretical model mobilized for explaining the importance of socially diversified choices is most often the rational one. However, research has mainly concerned "vertical" choices, between clearly unequal paths. The presentation investigates whether some "horizontal choices" seem to exist in France today. We will show 1) that horizontal choices are mostly vertical ones : they matter mainly because they warrant access to some specific educational resources, leading to a better place in the file for the best subsequent tracks and so to the best jobs; 2) that some horizontal choices exist, as the differences in choices between boys and girls show. Even if one may consider that girls rationally take into account the anticipation of their future life, we can't discard all reference to preferences and life-plans, resulting from sexually oriented socialization. All that have obvious consequences on what we consider as inequalities.