| Schulsystem | school system |
| Wahlsystem | voting system |
| Subsystem | subsystem |
| Schuhpaste | shoe polish |
| Schulmeister | know-it-all |
| Schussel | scatterbrain dizzy |
| Schüssel | bowl basin banger satellite dish |
| Schriftsystem | writing system |
| Schulgarten | school garden |
| Schulleiter | principal |
| Schulnote | grade mark |
| Schulter | shoulder |
| Schultüte | Schultüte |
| Schulwesen | school system |
| Schuster | shoemaker Shoemaker |
| Oktalsystem | octal numeral system |
| Sechsersystem | senary |
| Soundsystem | sound system |
| Immunsystem | immune system |
| Sternsystem | star system |