These are a few of the posted "notices" in Niall's class at school. The top one lists the rules for playing hockey safely (clearly drawn up by one of the children after a group discussion and agreement), and the lower one is about making sure outdoor play is fun and safe for everyone.
I love how positive these and other signs around the classroom are. They're about how to be friendly and safe with your classmates so everyone can participate and have a good time. Good rules for life!