United States Department of Education (DOE), Office of Civil Rights (OCR), has issued "Dear Colleague" Letters which may be of interest. These provide advice to schools, outlining legal requirements for enforcement pertaining to student misconduct.

January 8, 2014- - Joint "Dear Colleague" Letter, with US Department of Justice (DOJ), Civil Rights Division

April 4, 2011- - - - "Dear Colleague" letter on Sexual Harassment and Sexual Violence

October 26, 2010 - "Dear Colleague" Letter on Bullying and Discriminatory Harassment

Originally Posted by Joint "Dear Colleague" Letter
When addressing such harassment, a school should consider incorporating wide-ranging strategies beyond exclusionary discipline, including, for example, conflict resolution, restorative practices, and counseling, to help meet its obligations under Federal civil rights laws.
As with other advocacy, it is important to be familiar with the applicable laws and policies. Reading the "Dear Colleague" Letters may be a helpful starting point.