You would have to be accepted by a private boarding school & return home to your parents for all school holidays. Expect costs to your parents will run US or CAD50,000/year & up, plus 2-4 round trips home per year.
What are you talking about "companies?" No companies. Your parents pay, and must prove they have sufficient funds to pay all your expenses + transportation home, if a school accepts you, for you to apply for student visa. Boarding schools are typically grades 9-12, and you apply for admission the beginning of 8th grade.