Film-makers come to a Soviet secondary school to shoot the advanced 9 "A" class. 9 "A" class under the leadership of a young teacher Klavdia Sergeevna on all indicators came out on top. But this well-being was based on showmanship and snitching. Gradually, the conflict between the class teacher and students grew into a real war. So who is the tuning fork for whom?...
| Actor | Role |
|---|---|
 Yelena ShaninaКлавдия Сергеевна | Клавдия Сергеевна |
 Boris SaburovNot listed | Not listed |
 Andrei TashkovЛеша Кузьмин | Леша Кузьмин |
 Irina KorytnikovaNot listed | Not listed |
 Vasili FuntikovSasha Ganushkin | Sasha Ganushkin |
 Olga BogdanovaNot listed | Not listed |
 Victor BunakovNot listed | Not listed |
 Evgeniy GerchakovNot listed | Not listed |
| ZZinaida DyakonovaNot listed | Not listed |
 Yevgeni IvanychevNot listed | Not listed |
 Lyusyena OvchinnikovaNot listed | Not listed |
 Sergey SazontyevNot listed | Not listed |
 Alexander Gradsky(Камео) | (Камео) |
 Larissa MarkaryanNot listed | Not listed |
 Vladimir GuzarNot listed | Not listed |