S. Korean babies born Dec. 31 become 2-year-olds next day

apnews.com

4 pointstareqak5 comments

You think this is weird. Then realize kids get put on their school group based on the birth year in the west anyway.

I wonder how a biological age based school grouping system would work out.

Biological age on which date?

Date of conception.

I meant what date do you compare ages on, but since you need to put students in classes (you can't exactly have a class for each date of birth).

I live in Seoul for more than a year. It is also a thing to get into Nightclub, they sometimes check your 'Korean' age