Who We Are

Stockton Unified School District Department of Public Safety

About the Department

The Stockton Unified School District Department of Public Safety is one of a handful of specialized K-12 police agencies in California. The Department works 24/7 with a focus on students, staff, schools, and safety/security, and serves more than 40,000 students, faculty, and staff at more than 60 schools in the greater Stockton community. Authorized staffing includes 37 sworn officers, 8 dispatchers, 3 professional staff and 90 civilian safety and security personnel. Sworn personnel of the Department are peace officers pursuant to Penal Code 830.32 and Education Code 38000 . The Department has been certified by the Commission on Peace Officer Standards and Training since 1989.

Strategic Plan

2019-20 End of Year Report

2018-19 End of Year Report

2017-18 End of Year Report



Chief of Police,

Richard Barries

Chief Richard Barries became a member of the Stockton Unified School District Department of Public Safety in 2018. Chief Barries previously worked for the Santa Clara County Sheriff’s Office, East Palo Alto Police Department, and Stanford University Department of Public Safety. Chief Barries has an Associate of Arts Degree in Liberal Arts from De Anza College, a Bachelor of Science Degree in Justice Studies from San Jose State University, and a Master of Arts Degree in Criminal Justice and Graduate Certificate in Law Enforcement Administration from Arizona State University.


Mayra Franco

Lieutenant Mayra Franco joined the Stockton Unified School District Department of Public Safety in 2007 and has served as a Patrol Officer, a School Resource Officer, and a Field Training Officer. She was promoted to the rank of sergeant in June 2015, overseeing patrol functions. Lt. Franco is a Stockton native and a Stockton Unified Schools graduate. She has her Associate's degree in liberal arts from San Joaquin Delta College and her Bachelor's degree in Criminal Justice from California State University Stanislaus. Lt. Franco has recently completed her Juris Doctorate from Humphreys College and has been admitted to the BAR and can practice Law in California.

Sergeant, Investigations

Roberto Marquez

Sergeant Marquez graduated from Edison High School in 1989. He went to San Joaquin Delta College and graduated with an AA Degree in 1993, then attended the San Joaquin Delta College POST Academy class of 1993. He was hired at the Alameda County Sheriff’s Office in 1994 and stayed there until 2002. He worked at Santa Rita Jail, Eden Township Substation Patrol, Alameda County Narcotics Task Force, and the Oakland International Airport as a Deputy Sheriff/ Detective. Then hired by SUSD Police as a Reserve in August of 2002, then eventually a full time Officer in November of 2002. He Worked as an School Resource Officer at Stagg High, Edison High, and Weston Ranch High. He coached Edison High School Baseball, Head Varsity Baseball coach from 2005-2009, again Head Coach in 2015 and took them to the Playoffs. He was promoted to Corporal July of 2015, and worked as the Department Detective, then took over as Dispatch/Records Supervisor. He was promoted to Sergeant in July of 2018, currently Dispatch/Records Supervisor.

Sergeant, Field Operations

Marc Parker

Sergeant Marc Parker was hired with Stockton Unified Department of Public Safety in September of 2018. He began his law enforcement career as a Stockton Police Officer in 2002. He held various assignments during his 16-year career as an Officer such as; Community Police Officer, K-9 Handler, Detective in the Gang Violence Suppression Unit, Field Training Officer, Motor Enforcement Officer, Strategic Community Officer, Modified Vehicle Instructor, Emergency Vehicle Operations Instructor, Active Shooter Instructor, and Force Options Instructor (Simulator). Sgt. Parker is a long time Stockton resident and attended SUSD schools. He is a Stagg high school graduate, and as a student he was heavily involved in the Automotive Mechanics Program for all four years. He attended college and plans on finishing his degree in Criminal Justice. Regarding his personal life, Sgt. Parker is a small business owner which specializes in repairing and building custom exhaust systems for vintage muscle cars. He and his wife have four beautiful children. During the summer he enjoys boating on the Delta and barbecuing with his family.

Sergeant, Patrol/Property & Evidence

Stephen Marshall

Sgt. Stephen D. Marshall has more than 15 years experience in law enforcement. He has served as a narcotics investigator, a field training officer, and an acting watch commander. He has taught fellow officers as a report writing instructor, TASER instructor, and as a defensive tactics instructor. Sgt. Marshall has worked for several agencies, including the El Cerrito, Union City, and Menlo Park Police Departments. He joined the Stockton Unified School District Department of Public Safety in March 2015 and promoted to sergeant in June 2015. Sgt. Marshall holds a BA in English from Ithaca College and an MPA from California State University, Hayward.

Sergeant, Patrol

Rob Young

Sgt. Rob Young graduated from the San Joaquin Delta College Police Academy in September of 2003. He was originally hired with the Stockton Unified School District Department of Public Safety as a police officer in early 2004, at which time he was assigned to patrol, and as a School Resource Officer at Edison High School. Sgt. Young was then hired as a police officer with the Union City Police Department in June of 2007. During his time at UCPD, he was assigned to various patrol shifts, as a Hostage/Crisis negotiator (certified through DPREP, as well as the FBI), Crisis Intervention Officer, Crime Scene Investigator, School Resource Officer, Explorer Adviser, and as an Active Shooter Response Instructor for the department. Sgt. Young returned to the Stockton Unified School District Department of Public Safety as a Sergeant in May of 2016. Sgt. Young will be returning to college in the near future, and plans on completing degrees in Criminal Justice and Public Administration. Sgt. Young is a strong supporter for community policing, and enjoys positive engagement with the people of Stockton. Sgt. Young graduated from SUSD schools, and has been a life-long resident of Stockton. He has a son named Christian, and a daughter named Alissa, who is commonly referred to as "Allie."

Sergeant, Patrol

Brett Grawet

Sgt. Grawet started with the Stockton Unified School District Department of Public Safety in 2004 as a reserve/substitute until being hired full time in January 2006. He has served as a School Resource Officer, Patrol Officer, and a Field Training Officer. Sgt. Grawet was promoted to Sergeant in June 2014. His duties include conducting Background and Internal Investigations, supervising the Investigations Unit and managing department training. Sgt. Grawet has a Bachelor's degree in the Management of Information Systems and is a certified Associate Project Manager.

Sergeant, Patrol

Jesse Smith

Sgt. Jesse Smith became a member of the SUSD PD family in February of 2020. He was born and raised in the great city of Stockton. Previously, he worked for Stockton PD for a little of 6 years. While there, he worked as a member of the Community Response Team (CRT) which focused primarily on street gangs, illegal firearms, and illegal drug sales. He was then recruited to the Strategic Community Officers unit where the main focus was on building trust in the community and participating in community events. He was also a member of the Mobile Field Force where he earned the position of squad leader. He was also an arrest and control instructor and specialized in the Koga method which included defensive tactics and baton training. He was a member of the Peer Support team and assisted in the mental well being of his fellow officers. He was also a member of the recruiting team for SPD. Prior to joining law enforcement, he attended Fresno State university and graduated with a bachelors degree in criminology.

Sergeant, Administrative

Matthew Price

Sergeant Matthew Price became a member of the Stockton Unified School District Department of Public Safety in December 2017. Sergeant Matthew Price has over 16 years of law enforcement experience and previously worked for Escalon Police Department, Ceres Police Department, and Stanislaus County Probation Department. He has an Associate of Arts Degree in Administration of Justice from Modesto Junior College and a Bachelor of Science Degree in Criminal Justice Administration from Columbia Southern University.

Senior Crime Analyst Researcher

Chris Vaughns

Chris Vaughns has been with Stockton Unified for over 19 years. He has served SUSD in many capacities such as; Food Services, Custodial Services, Information Services, State & Federal Programs, Research and Accountability, Elementary Education, Curriculum and Instructional Technology, and recently joining the SUSD Department of Public Safety in 2018. Chris journey began when he relocated on his own to Stockton from Sacramento at the age of 18. He joined Stockton’s California Conservation Corps to not only get off the streets but learn job skills. He later went to Heald College and earned a Certificate in Computer Technology. His enjoyment for computers led him to San Joaquin Delta College where he received his Associate’s Degree in Computer Science. He then studied at Humphreys University and received his Bachelor’s Degree in Liberal Studies. In 2017, Chris received his Master of Science in Educational and Instructional Technology and now he is currently pursuing his Doctorate in Educational Leadership. As Chris worked and pursued his education, he was also a Foster Parent for five children within 10 years. Currently, Chris completed his Crime Analyst Certification at Sacramento State University, earning the title of CCIA, Certified Crime and Intelligence Analyst. Chris considers himself a “life-long learner” and is a strong believer of education, family, and community. He still resides in Stockton along with his wife and three children.

Executive Assistant

Perry Touch

what we offer


  • School Monitoring and Security
  • Student Mentoring and Counseling
  • Safety for Students, Parents, Staff, and Surrounding Community
  • Parent and Community Partnership
  • Monitor Crime Rates & Statistics
  • Emergency Training and Evacuation for Schools
  • K-9 Services, and Demonstrations
  • Presentations for Gang, Drug, and Bullying
  • Fingerprinting for Job or Volunteer

our advantages

As School District Police

  • Knowing our Students

    Working in schools allows us to establish great rapport with students. Sometimes we are their mentors during difficult decisions in life, sometimes we are the ones they come to when they are afraid, and most importantly, we are there for them.

  • In-House Security

    Our Police Department is dedicated to providing the safest campuses possible. We have School Resource Officers at each high school and additional officers which patrol surrounding areas at all times. We are committed to making all students feel safe.

  • College & Career

    Our Police Department puts a strong emphasis on education. We work along side of schools to help establish career pathways which may lead to Law Enforcement Careers. Visit Public Safety Academy and Explorers Program on the menu for more information.