I believe some are sent with the intention of enrolling in uni here by improving their english.I do not agree that western high school is better than those found in Asian countries. Yes, parents still send their children to western countries but the primary reason are for safety, broadening of horizon, and contingencies against local unrest, NOT exactly for the quality of education. For quality of education, money is better spend to send their children to competitive high school locally than to some random high school in the west.