I use this list of rules with my students when they are not acting "civil". George Washington wrote these when he was in middle school. You can give each student a copy at the beginning of the year, or hand them out as needed. My 8th grade teacher made us copy them for punishment. I like to point out the specific rule that corresponds with the behavior exhibited and make them copy the rule and write one page explaining and stating how they will apply the rule to their conduct.