In my opinion,it's necessary to sent children to shudy abroad at a very young age.
On one hand,children at a young age is sensitive about language study,foreign countries can create great atmosphere which make language learning easier and more efficient.On the other hand,staying abroad early can teach children how to make a life by themselves,which is important for their psychological education.
In a word,study abroad at a young age,which is vary necessary,is helpful to children both in language learning and mental education.