Poorly educated by her father, a wacky researcher, Claudine is a teenager full of life who loves her small village school run by Miss Sergeant. A new teacher, Aimée Lanthenay, arrives at the school. Seemingly awkward, she is actually an arrivist who manages to get the departure of Miss Sergeant.
| Actor | Role |
|---|---|
 Blanchette BrunoyClaudine | Claudine |
 Jeanne Fusier-GirMademoiselle Griset | Mademoiselle Griset |
 Georges ColinDutertre | Dutertre |
 Margo LionMademoiselle Sergent | Mademoiselle Sergent |
 Suzet MaïsAimée Lanthenay | Aimée Lanthenay |
 Pierre BrasseurDoctor Dubois | Doctor Dubois |
 Marcel MouloudjiMouloud | Mouloud |
 Max DearlyClaudine's father | Claudine's father |
 Zélie YzelleMélie | Mélie |
 Katia LovaThe great Anaïs | The great Anaïs |
| JJacqueline DumonceauOne of the Jaubert sisters | One of the Jaubert sisters |
| YYvonne BroussardOne of the Jaubert sisters | One of the Jaubert sisters |
| ÉÉlyane SolerMarie Belhomme | Marie Belhomme |
| SSolange TurenneLuce | Luce |
| JJacqueline ValerioLittle Soulié | Little Soulié |
| KKetty PiersonJunon | Junon |
| CChristiane RénalPeasant woman | Peasant woman |
 Léon LariveRabastens | Rabastens |
 Marcel CharveyDuplessis | Duplessis |
 Auguste BovérioDoctor Lebarbu | Doctor Lebarbu |
| RRené BussyParliamentarian | Parliamentarian |
| LLouis GougetExaminer | Examiner |
| FFred MarcheUsher | Usher |