I went to boarding school from age 13-18. So exactly the years you're describing. I do think I'm independent and can go anywhere and I'm not afraid for things to end and change. I know that's a really broad thing to say. But sometimes I see people getting emotional about moving house or leaving a job or generally chapters ending. I don't really mind that. I've been really used to it, since I was young. Not sure if that's because of boarding school though.
In terms of independence, I don't know. I was absolutely hopeless when I left school at 18. At school there was a rule for everything and everything was very controlled and regimented. I found it really difficult to sort myself out without these rules and do normal adult stuff. I'm not sure how it would have been, had I been at home. I was very rebellious at school..
Going to uni was an absolute doddle for me, as I was so used to living away and it was basically like school but without the rules. I found it very difficult to be responsible with money etc and missed classes a lot. Again, I don't know how it would have been, had i stayed at home for school.
I think my school could have given us slightly more autonomy to set us up for the big wide world. But again, I had lots of friends who didn't mess around like I did once they left school. They just got on with it. So this could just be my personality.
The only thing I can say is that I'm not afraid of many social situations and changes and I would pretty much move / go anywhere if it made sense for my family. I'm not tied anywhere or to anyone really. ( apart from my immediate family ). I do love my parents and I do see them regularly, but I'm just not tied to where they are. I was happy to move around at uni and after and it didn't bother me at all. I know lots of people who didn't board and always stayed in one place who would never do that kind of stuff. They'd miss their families and where they're ' from ' too much. They don't know who they are without their parents / siblings / communities they've grown up in. Whereas I don't feel like that. I have no idea if that is boarding school or just the way I am.
Oh I should add that I was an ' overseas ' student anyway. That may add to how I am too.
Will I send my kids ? Probably not. I want to know what's going on with them day to day and I want to be able here for them to advise them on heartbreaks and problems they face during those teenage years. I was relentlessly bullied at certain points and my parents had no idea.
All in all though, I absolutely loved it. Living with all your friends at that age is just so much fun !