My 2 cents: We lived in Sweden for a period of time and I wouldn't recommend their educational system (except that college is free there). IMO, they work really hard to make everyone equal. Also, we've got friends in Ireland with a very gifted child and although the schools will allow acceleration, no other accommodations are made for gifted children.
Nevertheless, I completely agree that travelling to other places or even living there is a fabulous learning opportunity but I'm not sure that there is an ideal place for a public education. (Yes, we HS too!)
