Yes, we would offer geographic diversity. I did think about the planefare aspect. We have relatives in the area, though, so if DD didn't want to come home every time, she easily could find somewhere to go.

I really doubt we would do this, TBH, and it is not something I would ever have pictured for my kid, but with this particular kid, it's not totally off the table. DS would not want to do it, I don't think. He's a homebody. DD...well, she is just her own thing, and I could see boarding school life being her kind of thing. She LOVES overnight summer camp. Wants to stay for weeks. She also is the kind of kid who can make friends with anybody and is not bothered at all by differences in background. (Although I have to wonder where the limit of that is.)