I Want to spend last year of high school in Japan?

Question:

Hi i'm 17 this year, i'm graduating from my high school, but I still didn't choose my career, I want to spend one year or so abroad so I can think, and me I always thought Tokyo was cool and I heard the high school students there are aged from 17-18 ? just perfect for me

so how many grades does a japanese high school have? 10, 11, and 12? and the cities i like is Tokyo, Osaka, Fukuoka,Kyoto

Answer:

Well, you can join 3rd year of high school. But unless you are on an exchange program, it's very difficult to join a high school in Japan because you must be proficient to follow Japanese classes.