When responding to any adult, you must answer by saying "Yes ma'am" or "No sir." Just nodding your head or saying any other form of yes or no is not acceptable.
When someone is speaking, keep your eyes on him or her at all times. If someone makes a comment, turn and face that person.
Use your entire arm or sleeve, or cover your nose and mouth inside your shirt. Wash your hands after you blow your nose.
Do not get involved or add your voice to the confusion if a student is being reprimanded. Wait to politely add your comments later.