I have read this thread with interest,My ex husband ( a forces child,his father was very high ranking) was sent to boarding school at 6.It has had a lifelong impact on him.
He is bright, sucessful, sociable and easy to get along with,all products of his boarding school days.He still has friends from his school days,who are like family. However as he spent so much time away from home he learned to keep busy and put on a brave face,he did this for so long,he forgot how to process difficult emotions(anger,fear).So although extremly likeable he has the emotional depth of a turnip!(he would agree with this).
So although a great example on first glance of a boarding school child,I do feel that having to cope so early on in life,young children need to have space not to cope sometimes,made him somehow switch off emotionally.He went home only in the holidays.This has had an enduring impact on all his relationships( I am his second ex wife).
However I do feel that this was down to him being so young and his parents were spectacturly cold fishes and that and that this may not be the case for older children.
I think if he could articulate it, he wishes he had been asked what he thought and really given the option to leave,and to know that he didn't always have to put on a brave face.Because sadly for him, for me, for his first wife and most off all his six children he now can't take off that mask.