Talk:Yūki Mikan/@comment-913321-20160918031553/@comment-75.97.16.91-20161120210732

In Japan

Elementary school

6th grade ages 11-12

Middle school

7th grade 12-13

8th grade 13-14

9th grade 14-15

High School

10th grade 15-16

11th grade 16-17

12th grade 17-18

The Japanese are very strict about enrollment age and if your birthday happens to fall after the first day of the year when entering Primary school they will make you wait till the next year. They also very very rarely ever leave anyone back or advance them ahead a grade so 99.9% of the time everyone is the same age on the first day of any given school grade.