In some universities, complete course schedules are made available to students at the time of registration. Typically these schedules give the room number, instructor and time for each session. Students use this information to select their courses. A computer program then allocates students to course sections so as to provide students with satisfactory schedules, to roughly equalize the number of students in all sections of the same course and to respect room capacities. The authors designed and implemented such a program at the Ecole Polytechnique de Montréal, one of Canada's leading Engineering schools.