One of the most important things to have at school are rules. They are to help you to keep safe. In school and out of school. If there were no known rules everybody will break into schools and steal stuff. Kids will have fights and not get stuff done. There might be heaps of Police around the school.
The school would look messy and ugly. People might chuck bottles at windows. Maybe they will be tagging on walls and it will look ugly as. The police might ban the school and let no one into the school.
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