Is there a particular reason you are looking for a boarding school? My brother and I (both gifted)went to a unique boarding school that was a really wonderful experience. It was not billed as a school for gifted but looking back, I am pretty certain most of the students there are/were. I really wish I had sent my daughter there when things started falling apart for her in public school. It isn't for everyone, but it is a real adventure and could be a lifesaver for a gifted kid who isn't thriving in the public school system. Google "A S Neill's Summerhill". Not only is it an opportunity for a couple years of freedom, independence and serious personal growth, it is an opportunity to make life long friends from other countries, and if you are inclined to go to a competitive college down the road, it can certainly give you a unique edge.