Communicate in the appropriate language without slang or texting abbreviations. No cyberbullying, treat people how you want to be treated. Report cyberbullying to your teacher. Watch out for plagiarism and remember that you are accountable for your words.
iSafe is the tool I would use to help my students and parents understand digital responsibility.
I would teach digital citizenship by using websites and videos that explain it. I would have them fill out a contract to insure that they know what is expected of them. I would also teach them how to cite their information that they are using. I would share these websites with parents so they also know about digital citizenship.