Help / Thanks

My friend in Beijing wants to send her son (2nd year in High School) to US
as an exchange high school student first. Then he may apply for US college later. The money is not issue for her family.

Her son is an excellent student academically. He also participates a lot sport activities in Beijing.

The questions is: How can she help her son to find the right way of
joining an exchange prgoram, or whatever.

Thanks a lot for the information