Higher education has expanded to a remarkable extent in many countries in recent decades. Although this has led to high levels of participation, inequalities not only persist but are also strengthened. The persistence of inequalities is partly the result of policies for the widening of participation having been accompanied by institutional stratification with educational choices being unequal and socially defined. There is evidence that with the development of new university departments and the increase in the number of university entrants in Greece, a stratified system of higher education has emerged. This study draws on quantitative data that provides evidence that choice has been driven largely by the students' social class: the close relationship between social class and educational opportunities has remained intact. Furthermore, social inequalities in access and distribution in higher education persist, despite the substantial increase in participation in higher education. Social class is a key factor in the interpretation of choice of study, which, along with the performance in the national level examinations that determines entrance into universities, has also led to the increase in the stratification of higher education institutions.