It's a complicated matter, which I don't think will assist you in what you're doing here. You're talking about section 93, on education.
It does go to the question of, historically, there being separate schools in Ontario—Catholic schools—and it provides that those rights will always survive. In Quebec there are to be Protestant schools. Later on, if these things aren't respected, the federal government can intervene to see to it that these rights are respected.
I wouldn't waste any time on it, because I think I can say it's somewhat obsolete. Education now is effectively 99% provincial. Whether we're talking about formal education like universities or high schools or other kinds of education, it's a provincial field. As far as the exceptions go, I can look at that more specifically for you if you like. I don't think the exceptions to which I refer are anything more than what you might call technical constitutional exceptions that don't have much bearing any longer in the educational field.