If the disruptive behavior feels intimidating, threatening, or appears to be escalating, you should consult with one of the following: Student Conduct and Community Standards, Campus Police, the Office of the Vice Provost for Student Affairs, Counseling Services, or your department chair. Typically, a team approach will be employed to assist you in evaluating and handling the situation. An assessment team will assess imminent danger to individuals or to the academic community. The objectives of such an assessment include providing appropriate levels of support for you and others involved; demonstrating concern for other students who may be affected by the student exhibiting the behavior in question; and deciding how to handle the student's behavioral problems. Student Affairs, Student Conduct and Community Standards will also follow up with the disruptive student.
Adapted from the University of Southern California's Disruptive & Threatening Student Behavior: Guidelines for Faculty and Staff. Their guidelines can be found at USC Guidelines.