 Students from Columbia University and the other colleges and universities included in the consortium (University of Chicago, Cornell University, Johns Hopkins University, University of Pennsylvania, Princeton University, and Vassar College) can attend classes at the Free University of Berlin for one or two semesters as external students.This temporary enrollment is preceded by a six-week intensive language program.Alumni of the Free University of Berlin include many scientists, philosophers and politicians, amongst them five Nobel Prize winners and 15 Leibniz laureates.