i have originally come to Canada as an exchange student as well, back then in early 2000s, we are poor students, nobody actually knows how to party, i understand nowadays, a lot of studnets come here just for vacation, or language exchanges, do not put effort into studies at all.
maybe one day if they are too noisy, just go to tell them again.. if doesn't work, just call police, students are here on visa, they will be much serious when police shows up. if they can not renew visa, then they have to go home..
when crisis strikes, there are always opportunities in the hood.