I moved to Sweden when I was young and lived there for four years - of course it was difficult to move to Sweden and then again to move back to australia four years later, but it was the best experience my parents gave me. I learnt a new language, was able to travel extensively and also became more resilient to challenges life throws at you.

You may find this book helpful:
Culture SHock! Successful living abroad
A parent's guide

Robin Pascoe