Higher education has undergone many changes over the last few decades, allo
wing admittance to an increasing flow of "new students", most of which are
of modest origin and with a professional secondary-education background. Th
is increase in diploma holders has reinforced social differentiation within
the existing courses. This article proposes a better understanding of the
new issues of discrimination in relation to the admission of a large number
of technology graduates. It analyses their rather paradoxical choice of co
urse, and their studies in higher education, from which spring misunderstan
ding. incomprehension, and to finish, individual disillusionment and collec
tive downgrading. The carter path of technology graduates today is the refl
ection of a growing differential instability : another way of reproducing i
n higher education the differences already encountered at school.