Loomis Chaffee is a medium-sized school of around 650 students located in the suburbs of Connecticut. It is one of the top schools in the US, and a member of the Ten Schools (Choate, Deerfield, Hill, Hotchkiss, Lawrenceville, Loomis Chaffee, Andover, Exeter, St. Paul’s and Taft). It is in the suburbs north of Hartford, CT. It’s about 2 hours west of Boston and on the way to New York from New England.
Average SSAT score is around 80% and you will probably need TOEFL score close of 100.
My understanding is that it is not easy to get into this school from China as there are a lot of applicants from there. But this would be the same for all the top schools.