I'm currently working on a fanfic and need information on Japanese 
schools. Namely ;

1) Is it possible to transfer from one school to another? I'm talkng 
about high school, or the Japanese equivalent of it. If it's 
possible, what would you need to do in order to transfer?

2) Are classes segregated completely by grade level, or are there 
classes where upper and lower classmen would both attend?


Thanks!

Derek