Classroom rules interfere with our lesson planning because if we have not introduced rules to our class then our lessons with not be successful and we won't be able to complete and teach the lesson as we wish.

If a student is unaware of a rule or something they should not be doing, then you cannot get irritated when your lesson does not go as planned. An example may be for students to not shout out the answer during homework take-up time or when us teachers ask a question to our class waiting to see hands raised to hear the answer but instead you hear all the students shouting. This is not ideal especially if it is a classroom rule.