| Subject | English | Japanese |
| gen. | n graduates in the same class | 同期生 |
| gen. | n vs repeating the same class | 留年 ichi1 news2 nf27 (school) |
| gen. | n same class | 同級 news1 nf15 |
| gen. | n same class | 同類項 (dōruikō) |
| gen. | n-adv vs adj-no same class | 同期 ichi1 news1 nf04 (dōki) |
| gen. | n same kind or class | 彙類 |
| gen. | n vs staying in the same class for two or more years | 留年 ichi1 news2 nf27 |
| gen. | n student repeating the same class | 留年生 |
| gen. | to be homeroom teacher for the same class multiple years in a row | 持ち上る |
| gen. | to be homeroom teacher for the same class multiple years in a row | 持上る |
| gen. | to be homeroom teacher for the same class multiple years in a row | 持上がる |
| gen. | to be homeroom teacher for the same class multiple years in a row | 持ち上がる news2 nf31 |