Have you ever walked among a group of teenagers at the bus stop, at school or by the playground?An adult friend of mine, who is not used to going to secondary school, recently had a surprise: the corridor was silent during breaks. It was not because the teachers were strict, nor because the corridors were
![](https://school21.si/wp-content/uploads/2024/05/top-view-girl-using-smartphone-bed-600x600.jpg)