Rules at my school. At my school we have to follow these rules:

At my school we have to follow these rules:
1.   We must wear a uniform,
2.  .We mustn't use our mobile phones at the lesson.
3.   We mustn't talk at the lesson.
4.   We mustn't run during the breaks.
I think the rule number 3 is the most useful. And the rule number 1 is not necessary.