No. They need an undergraduate degree and they need to have good marks. They need to be able to communicate in English, but they get along very well. We had a team last year that had an Israeli, an Iranian, a Korean, and a couple of Canadians working together. I used to joke and say that if the world could work like this, just imagine how much better the world would be.
But the training is all undergraduate, and they need a desire to make a difference.