That varies, I only had about $6000+ (I couldn't get any more loans after the 2nd year), which I already paid off. But some of my classmates could end up with nearly $50000, because they were given the max loan (which is over $9000) every year, and co-op or internship will take 5 years to graduate. Interest is about 8% starting as soon as you are not a full-time student any more, I was part-time in my last term and the interest started accumulating from there! So it is a big burden for new, or even some older graduates. I totally consider myself lucky to be burden free right now.