Why do rich people send their children to study abroad?

In China, for example, a record 544,500 students went overseas for schooling at some level in 2016, according to China's ministry of education. With that number up from just under 400,000 in 2012, the trend is clear. The United States is easily the most popular destination, but many are now heading to the United Kingdom, Australia and Canada. According to the Knight Frank wealth report of 2017, in the UK alone the number of Chinese students enrolled in private schools has risen 191 percent in the past 10 years.