I have to make a decision between the following schools:

McGill (Canada)
Pittsburgh - Katz
George Washington

I got rejected by Rotman and Notre Dame.

Would like to get input on which would be the best school for my long term career goals (to work internationally for a couple of years before returning home to my home country.) I've heard that Canada is better than this than the US, but the fact that McGill is in the French speaking part gives me pause. My industry goal is to switch into management consulting (not necessarily a big firm, but perhaps a smaller boutique firm.) I work currently in technology development.

Thanks for any advice!

While none of these schools is well known for consulting, they do tend to place between 20 and 30 percent of their grads into the industry. I wouldn't worry so much about the language issue with McGill, it is a concern to some degree, but the school also places well into English-speaking provinces (Ontario/Toronto especially.)

I would do some research on LinkedIn, and also search out alumni in the kinds of consultancies where you'd be interested in working. It would take some work but you'd also be able to better refine your career goals that way, I'd imagine.