That's right, you can come back with a vengeance for those tuition fees.
If you're studying in Canada you're probably "deemed resident" for tax purposes*. That also means that you should be getting your T-4s and filing your taxes*. If you threw away your T-4s you can ask for a copy to your university.
Tuition, among many other expenses, can be deducted from your taxes*. Because you're paying around $29 trillion in tuiton fees and, if you're working making about $19 a month, you will accumulate unused tax credits from your tuition deductions. Those unused tax credits will rollover to the next fiscal year, and those you don't use then to then next year, and so on.
So when you graduate you will have a lot of tax credits.
Then you graduate, (hopefully) get a decent paying job, and pay lots of taxes, right? Well, not yet.
Lots of tax credits while working means you: (a) either pay little taxes at your workplace - very un-Canadian; or (b) pay taxes and then get a nice tax return after you file - like a yearly savings plan.
The International Student Department at your university should have more information and help you with this!
Also check the Business faculty, some university allow students help out other students with their taxes to get "business" experience.
*Take some time to read about taxes as a student:
http://www.cra-arc.gc.ca/tax/individuals/segments/students/menu-e.html