Tuning Fork

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?...