Free Classroom Rules Poster and Instructions
It sounds very idealistic to say this, but it’s true. From personal experience, I assure you that simplifying your rules will simplify your life.
At the beginning of the school year, when it’s time to introduce the class rules I show students this poster and read the three words. Then, using the Socratic method of questioning I go through the rules one by one and discuss the implications of those rules (which is the reason you don’t need many.)