You might try searching in the "high school" and "college" sections of the boards here-- I know that there are boarding schools which are top notch and cater to elite college-bound students.

Whether they cater to HG+ students is another matter-- but there are members here (past and semi-present) who have gone the boarding school route with their children. Grinity comes to mind.


Schrödinger's cat walks into a bar. And doesn't.