Want to know how fucked Alberta (Canada) is? If you apply for student loans, it must be signed by a parent unless you have lived on your own for a minimum of 2 years. What does that mean? It means you can't get a student loan if you live with your parents and they refuse to cosign the loan. It also means you can't file independently until 2 years after you move out. Suppose the parents kick you out at age 18. You can't apply for student loans until you are 20. You'll work at a Starbucks cashier for those 2 years.
Are you in Alberta?
IIRC that's only applicable for 4 years after graduation (yes, I realize this is probably the only time it's impotant). But the parents are not 'co-signing' the loan. They only sign the form to verify their income from the previous year. If their income is too high, you don't get a loan.
