Fascinating article here about a Mandarin immersion school in Minneapolis. I believe that attending an immersion school like the Yinghua Academy for several years is one of the only ways a person can become truly fluent in Mandarin while still living in the United States.
From a cross-cultural perspective, check out the part of the article that discusses some of the cultural adaptation challenges the Chinese and Taiwanese teachers are facing. These folks are living in an entirely different world now. I’d love to go and talk with them for a few hours about what the Americans are thinking.