I don't know anything about immigrants, but i only know some rankings about the study abroad.According to the incomplete statistics, after China's reform and opening, a number of more than 20 million students to study in the United States accounts for about 40 percent of total Chinese students studying abroad. So, certainly the United States is the No. one country for studying abroad for Chinese student. The next following one is Australia, Canada, England, French and German. Now the relatively small European countries have relatively small percentages.
But someone said maybe the total number is the United States, but now most definitely not the United States. It's very difficult to get visa from the United States after 911, even you are rich and you have the TOEFL socres. Australia and Canada are still the most number for western countries. But the total number it is now Japan and South Korea. The reason is very simple: low-demand and cheap than the west.