Police Presence in schools Fuels the school-to-prison pipeline. Police presence increases chronic absenteeism, in-school suspensions, out-of-school suspensions, expulsions, and police referral and arrest. Sources: Research on the Impact of School Policing (ACLU of PA, April 2022) The Thin Blue Line in Schools: New Evidence on School-Based Policing Across the U.S. (The University at Albany, SUNY/RAND Corporation, 2021) #nationaljuvenilejusticenetwork #blackandpinknational