@ellythomas : I have been in this situation a few times during my academic teaching years. My first approach would be to the students who are being disruptive and advise them that their behavior is quite disruptive and also disrespectful. Not to mention unprofessional. If their behavior continues after my first attempt with them, I would then very professionally and quietly ask them to gather their things and leave the classroom for that day. In addition, I would let my Superior know of my actions.
LrL~~
