By the way..for those who enjoy details!!!!
You can also study abroad during highschool as well. Paying for the trip can be funded by the Universities themselves and/or finacial aide.
The programs and list of Universities are growing! Get out there and fulfill your dreams. Just glancing around I have seen that Texas, Massachusettes, Michigan, Missouri, Illinois, Florida, California, Oregon, Ohioh, N.C and S.C, have programs. there are more I assure you..if you can name a state, there is probably a program there. If not, you can always apply for some scholoarships or programs via the internet.
Just search the web "Study Abroad Japan" or "Study Abroad". Add the name of your state as well to minimize the search results.