How do you become a foreign exchange student?

alright I've been doing a lot of studying on this subject as i REALLY want to go to Japan,

for starters it depends on how old you are, you must be at least 14 years old and in 9th grade, but for different countries it ranges, usually you must have a decent GPA (that means B's and above all year round) cost's can vary from 5k to 8k again it varies country to country, these cost can be lowered by donors, scholarships, and the group you registered with. You can register with a school program (IF they have one) or you can find an organization to fund on your own (like me)

here is a link that helped me ALOT:

http://www.requirements.englishabroad.us/requirements_japan.HTML

Good luck!