A university degree in Canada costs 16-20k CAD per year for tuition/books/etc, more if you’re an international student. Plus residence fees and food and other costs of living if the student isn’t staying at home and just commuting to university.
There’s a reason Canada suffers from brain drain of so many of our skilled workers leaving. Other places, particularly the USA, are popular destinations because they are better opportunities economically.
Why do they need you to allow them?