kōgakunen
1. upper grades of primary school (sixth, fifth, and sometimes fourth grades)
★ Common
Noun
#26901
1. upper grades of primary school (sixth, fifth, and sometimes fourth grades)
1. Not a senior student.; Not in an upper grade.
1. High-grade students; Older students
1. If a higher grade level; When a higher grade level
1. Not a senior student.; Not in an upper grade.
1. Was not a higher grade level.; Was not in a higher year.
1. Was a senior student; Was in an upper grade
1. Was not a senior student.; Was not in a higher grade.
1. If/when upperclassmen; If/when a higher grade level
1. Senior year; Upperclassman