I attended York a couple years back but left after my second year studying chemistry. I actually lived on campus the first year and commuted the second year. Let me just say that I regret living on campus. I would explain but it's a very long story.
The university is located in an area where there is absolutely nothing around it. So if you're living on campus and want to wander off campus for fun things to do...better take the TTC and actually head down to downtown Toronto. There are plenty of busses from various regions that drop students off so commuting isn't a bad option.
The majority of the buildings have no character at all due to their concrete structure and design. The only building that is a highlight of York University is Vari Hall.
When I was studying there, most of my profs were decent but some weren't that great. It's also hard to get extra help when the prof is bombarded with dozens of other students.
I'll end my review off with the following statement that York is known for: If you go to York you can hold a fork. OR maybe...If you go to York you'll get forked.