My university (in Denmark) had a large number of eastern European students it created a very different environment, a better one in my opinion. Students are exposed to different ideas, different approaches to solving programs and learn to work together with people with a different background and culture. Of cause my university focused heavily on group assignment and working in groups in general.
I honestly don't mind that my tax money is spend on education people from around the world, although I think it's currently only free for EU citizens. And perhaps there's the added bonus of a few opting to stay and work in the country.