Actually, students don't experience discrimination because the system is different in Quebec, for we musn't forget that CEGEPs offer both qualified pre-university programs and vocational and technical training. International students who come to study in Quebec often do vocational and technical training.
I will give you an example. In Matane, were it not for international students, who make up about 50% of the student body, the programs could not be offered to local students who have lived there for generations.