Okay, I’m pretty sure this is appropriate for GQ, since my interest in the answer is purely academic, even though it certainly applies to me.
I attend an international prep school in British Columbia. The parents of all international students (not including me) who attend sign a paper granting guardianship to the director of the college. This leads to several questions:
-What about the Canadians, who haven’t signed over guardianship?
-What is the legal authority of the current director over those whose parents signed over guardianship to the previous director?
-What happens when a student turns eighteen?*
-Is legal adulthood attained when a student turns the AoM for BC, or for their country of residence?
Thanks ahead of time, everyone. I’ve seen you guys answer tougher ones before. 
*I believe that to be the age of majority in BC. Please correct me if I’m wrong.