Progressive schoolteachers Landi and Anna have a profound influence on two of their young students, Mirella and Franco. The two kids are enamored with one another and decide to experiment with some of the knowledge they've gleaned in the classroom.
| Actor | Role |
|---|---|
 Vittorio De SicaProfessor Landi | Professor Landi |
 Lois MaxwellAnna | Anna |
 Gabrielle DorziatHeadmistress | Headmistress |
 Pier AngeliMirella | Mirella |
 Gino LeuriniFranco | Franco |
 Monique van VoorenGiannina | Giannina |
 Armando MigliariHeadmaster | Headmaster |
 Olga SolbelliSignora Giusti | Signora Giusti |
 Lauro GazzoloSignor Giusti | Signor Giusti |
 Ave NinchiSignora Berardi | Signora Berardi |
 Carlo RomanoSignor Barrardi | Signor Barrardi |
| MMaria Giuseppina FerrandiAssistant | Assistant |
 Lina MarengoSerafina | Serafina |
| PPatrizia Corsi RotaBianca | Bianca |
| FFranco NicotraAugusto | Augusto |
 Carlo Delle PianeEnzo | Enzo |
| VVito AnnichiaricoGuido | Guido |