I wouldn't spend my time worrying about this. If you're a good student you'll get into a good school somewhere. Don't waste money applying at a university if you can't find a prospective supervisor who is willing to fund you fully.
I did my undergrad in Canada and most of my friends ended up going to grad school in the US. Yes, my friend who got in the 99th percentile on the GRE went to an ivy league school, but so did my friend who got in the 74th.
At one of the US schools where I was accepted for a PhD I actually talked to an American professor who admitted a REVERSE bias towards Canadian students because they were usually better prepared than the Americans! (He qualified this by saying this was a general statement and that the really top US schools produced excellent undergrads).
The chair of the graduate admissions committee where I did my undergrad in Canada once remarked gloomily that it was often hard to distinguish which candidates applying from China were mediocre and which were really good - the students had special prep classes for the physics GRE, so their scores were all high. Meanwhile, none of the Chinese students typically had research experience and it was hard to tell from the references how well a student worked with others.
bkvitha said:
Is it easier for international students to be admitted into Colleges(Us) in Europe, for instance Germany or the UK?
And funding?
Although there is good research happening in the UK, it really only makes financial sense to go there if you can get a hard-to-get scholarship. Several of my friends investigated the possibility of doing graduate work in the UK, but all of them backed off when they realized that they would have to pay to do their PhD. British universities have only recently started to wake up to the fact that other countries are enticing away foreign students by providing better financial support:
http://education.guardian.co.uk/higher/postgraduate/story/0,,2118396,00.html
I recently moved to the Netherlands and I can't understand why foreign students aren't climbing over one another to do PhDs here. There is excellent science going on and the universities and funding agencies treat PhD candidates like human beings who are undertaking valuable training (instead of like herds of lemmings which need to have their weakest ranks culled off). One of my friends is doing a PhD at one of the Max Planck institutes in Germany and he is also enjoying the lively research environment there. The graduate programs in the sciences in Germany and in the Netherlands are all in English.
I also have experience at universities in NZ and Australia. My impression is the physics departments there do not have high expectations of the students in terms of publishing and how far they will go in physics careers (as compared to other universities around the world which I or my friends have spent time at). The pay at universities in Canada, the US, NZ, NL and Germany is comparable.
Of course, the biggest factors in where you go to school always wind up being the supervisor and the project - even middling schools have a few people doing great research.