| Klassenkamerad | classmate |
| Klassenkameradin | classmate |
| Klassenkasper | class clown |
| Klassenkampf | class conflict |
| Klassenpfad | classpath |
| klassenbasiert | class-based |
| Klassenfahrt | school trip |
| Klassenzimmer | classroom schoolroom |
| Klassendiagramm | class diagram |
| Klassenarbeit | class test exam |
| Klassenlehrer | class teacher homeroom teacher |
| Klassenraum | classroom |
| Klassiker | classic |
| Gassenhauer | popular melody popular song |
| Kassenwart | treasurer |
| Massenmord | mass murder |
| Spielkamerad | playmate |
| Klagender | wailer |
| Klassenclown | class clown |
| Klassenvariable | class variable |