When you intervene refuse to argue with either student. Model the respectful behavior you expect from the students. First make sure everyone is safe and that no one needs immediate medical attention. Reassure the students involved as well as the bystanders. Explain to them what needs to happen next bystanders go on to their expected destination while the students involved should be taken separately to a safe place. Don’t attempt to sort out the facts while everyone is present don’t allow the students involved to talk with one another and do not ask bystanders to tell what they saw in front of others.