I apologize for the delay in responding, and thank you for posting. Rankings change every year, so it's best to look at several lists (The Hollywood Reporter publishes an annual film school ranking) and then research each school directly.
When comparing programs, look at the student films and alumni, how much hands-on production you get, equipment access, and the cost. In Canada and the US, there are strong programs at both large universities and smaller conservatories. Our Film School & Student Life forum is a great place to ask current students about their experience.