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National Gang Center

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The National Gang Center (NGC) furthers the U.S. Department of Justice’s mission to provide federal leadership in preventing and controlling gang-related crime and violence to ensure public safety in a manner that preserves the fair and impartial administration of justice for all Americans. The training and technical assistance (TTA) the NGC provides supports evidence-based and data-driven intervention-, prevention-, and deterrence-focused initiatives that aim to reduce violence.

The goal of NGC is to provide TTA to communities on developing evidence-based strategies or promising models to prevent and deter youth from joining gangs and reduce youth gang violence. Research demonstrates that gang-involved individuals are disproportionately involved in criminal and violent behavior. No single suppression or prevention strategy alone will reduce gang crime and violence. Needed are comprehensive, local, gun and gang violence interventions designed to reduce risk factors that lead to gang joining; provide positive intervention supports for gang-involved individuals, including those returning from incarceration; implement focused and strategic enforcement; and support victims of gang violence. The NGC provides an array of best‐practice information, training, strategic tools, and expertise to assist those who are working to prevent youth from joining gangs, intervene with those who are gang involved, and suppress criminal and violent street gang activity. The NGC will assist localities in selecting the most appropriate strategies to address their local needs.

The NGC coordinates the national Gang Resistance Education And Training (G.R.E.A.T.) Program, a school-based life skills competency program designed for both elementary and middle school-age children. 

Provider Organization

Institute for Intergovernmental Research (IIR)
Award Details


The NGC provides extensive on- and offsite training and technical assistance (TTA) to communities that want to implement comprehensive and coordinated gang-reduction initiatives that include a continuum of gang prevention, intervention, enforcement, and re-entry strategies.

The NGC provides topic-specific consultation and facilitates peer-to-peer information exchanges. Training services include a law enforcement street gang investigations training. The NGC is the main resource for training in the implementation of the OJJDP Comprehensive Gang Model, with step-by-step support for the model’s community assessment and implementation efforts.

The NGC also provides development and coordination for the Gang Resistance Education And Training (G.R.E.A.T.) national program. This prevention program, intended to be taught by uniformed law enforcement officers, helps youth foster positive attitudes toward law enforcement, avoid conflict, resist peer pressure, and develop a strong sense of personal responsibility. The program’s primary goal is the prevention of violence, especially gang-related violence.


  • Aftercare/Parole/Re-entry
  • Community Members
  • Court Personnel
  • Faith-Based Organizations
  • Families
  • Gang Prevention, Gang Intervention, and Gang Suppression Specialists
  • Juvenile Justice Specialists
  • Law Enforcement
  • Mentoring Professionals
  • Nonprofit Organizations
  • Probation Officers
  • Prosecutors
  • School Personnel
  • Social Services
  • State Advisory Groups
  • Students
  • Youth Services Professionals


Resources on the public website are accessible to all.

  • The following criminal justice professionals are eligible to become certified: G.R.E.A.T. instructors; sworn local, state, Tribal, and federal law enforcement officers and agents; military police; and other sworn law enforcement personnel receiving approval from the Program Office, including probation or corrections officers; and reserve, part-time, or retired police officers.
  • The following criminal justice professionals are eligible to participate in specialized online and onsite Anti-Gang Law Enforcement training: sworn local, state, Tribal, and federal law enforcement officers and agents; military police; other criminal justice personnel receiving approval from the Program Office including analysts, and probation or corrections officers; and local, state, and federal prosecutors.
  • TTA for the OJJDP Comprehensive Gang Model is prioritized for OJJDP grantees as well as some limited availability to other community-based gang reduction project stakeholders.


Products include resource tools such as “Parents' Guide to Gangs”; “Gangs in Schools Guide”; “Why Youth Join Gangs” video; "Community Violence Intervention: Addressing Gangs" webinar series; "Gang-Related Federal and State Legislation Database"; "Community Gang Assessment Guide"; "Outreach Worker Safety Tips"; and a "Strategic Planning Tool" (SPT), which is an extensive toolkit for communities planning a comprehensive gang-reduction initiative. It includes a matrix of evidence-based programs matched to research-based factors for gang involvement.

Also available is the "Community Resource Inventory," a customizable database that allows users to record and categorize information about their community organizations, programs, services, and activities into a searchable matrix to identify assets and gaps in service areas.  

NGC Staff
[email protected]

G.R.E.A.T. Program Staff
[email protected]

  • Combating Gangs
  • Ensuring Public Safety
  • Reducing Violent Crime
  • Supporting Prosecutors
  • Supporting and Protecting Law Enforcement
  • Youth Development

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Date Modified: January 7, 2022
Date Published: October 14, 2020