In both preschool and kindergarten, children are testing new ground, learning new rules of behavior. (babycenter.com)
They know that they may not be aware of the accepted rules of behavior and may behave in ways that will make them stand out and be easily excluded. (slaw.ca)
It's a good way to create laws, but laws are rules of behavior which make socially - acceptable behavior predictable. (politics.stackexchange.com)