Thread:Zaiaku666/@comment-1359322-20150513111458

Okay, since your asking a personal question on Akeno not for page improvement, i have to remove your questions, but i'll give you the answer to your question.

In Japan, high school graduation can be either 17/18. But to avoid making it too complex i'd have to explain from primary. In Japan, primary school can start at six, but since their school term start at April, only the children from January to March gets admitted while children from April to December will have to wait till next year meaning they reach 7 years old.

So due to this the graduation will occur between the age of 17 or 18. 17 for those with birthday before 1st of April, 18 for those after 1st of April. 