What are some good exchange student programs for going to Japan?

Question:

I want to be a foreign exchange student in Japan in high school (I'm in 7th grade). what are some good programs to use. the ones i've seen are-
http://www.ayusa.org/
http://www.best-student-exchange.com/
http://www.afs.org/afs-and-exchange-prog… (Not sure if this one does Japan)
http://www.yfu.org/
http://www.yfu.org/

Are any of these good programs to use? and please suggest some goo programs if you know of any that aren't listed.
Thanks!

Answer:

Lion's Club is reliable.

http://www.lionsclubs.org/EN/common/pdfs…

scroll down till you get to Japan.