Looking for supportive boarding school for daughter with anxiety

Either a school with supports in place, or a smaller, less stressful school. Main stream private school is not working. Preferably in the north east/tri state area.

Millbrook

Buxton or Dublin

Kent may also be an option

Marvelwood? (also in Kent, CT) I know someone with 2 daughters who have anxiety issues, and they both did well there.

Thanks for the helpful responses. Any suggestions on consultants if I go that route?

Maybe take a look at Proctor in Nh.