Well, first off if you're looking for strictly on-line schools then you're not limited to Canada.

Also, are you looking for a diploma or certification or just simply advanced Maya training. Keep in mind that a diploma will require courses besides 3D, i.e. math science, etc. Certification or vocational degrees are usually tasked-based and focus on a specific job type. As for more advanced maya training you can find tutorials, CDs, and DVDs all over the web.

So which way do you want to go?