U of T is strongly ranked for comm sci, but I’d recommend Waterloo over

The two universities mentioned are in Ontario, and applications are made through a common online portal (OUAC,but I believe that the service may only be offered to Ontario resident applicants.) Entrance criteria are based on marks (north of 90% for U of T, if I recall correctly, and above 95% for Waterloo. Students also have entrance essays to complete, they need 2-3 academic references, and a listing of extracurricular and leadership positions,

I will add this— I’m going to strongly encourage my DS to stay in Canada for his undergrad if he doesn’t receive substantial financial aid to an international school. We have several highly ranked universities that are both more affordable and well regarded by recruiters, both in Canada and the US. I’ve attended three Canadian universities, and all have had recruitment from the most competitive organizations in those fields.

Now, a word of caution—the US is getting rather bizarre in its foreign policy behaviour (e.g, listing Canada as a security threat from the War of 1812.) If your son studies in Canada, he may never want to return! wink

Canadian Citizenship and Immigration documents for students- https://www.canada.ca/en/immigration-refugees-citizenship/services/study-canada.html
http://www.cic.gc.ca/english/information/applications/student.asp

Ontario guidelines for post-secondary study
https://www.ontario.ca/page/study-ontario-international-students

What is to give light must endure burning.