Language

The way I see it, high school foreign exchange students do not come abroad to study, but just for the experience. We don't really get high school credit for coming here. It's more like a language experience. At least to me, anyway.
It's not like college where you actually get graded and such. High school life is easy for an exchange student.

What I'm trying to say is that this is one of the best ways to get exposed to a language and learn it in its native lands. Go as a high school student, if possible, and you will have a fun time learning the language of the place.