Among the tens of thousands of officers hired under grants from the Office of Community Oriented Policing Services (COPS Office) since its establishment in 1994, local law enforcement agencies across the United States have hired school resource officers (SRO) nationwide to improve and preserve safety in schools. All SROs currently funded through COPS Office programs undergo special training for these positions; this publication presents additional principles and considerations to guide the COPS Office's work relating to SROs and jurisdictions choosing to implement SRO programs.