Pillarsofcreation
Sorry bud, I was not online for a while.
What you have understood is correct. Most of the non-Europeans tend to return back to their countries.
Same is for Indians.
And this is similar in most of the European schools. Some places it is a BIT less.
The reason being, Language, and Visa issues.
Most of the jobs available have a language requirement, other have language preference. You would see very few where only English is needed.
Most of the European countries have high unimployement, so, the governments tend to make the visa rules difficult.