. Document rules
Don’t let your mutually-respected guidelines go forgotten.
Similar to handing out a syllabus, print and distribute the list of rules that the class discussion generated. Then, go through the list with your students. Doing this emphasizes the fact that you respect their ideas and intend to adhere to them. And when a student breaks a rule, it’ll be easy for you to point to this document.
You'll likely want to post these rules up in your classroom — if you haven't already — for occasional reference. If you’re feeling creative, you can include the rule list in a student handbook with important dates, events and curriculum information, too.