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National Gang Center

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The National Gang Center (NGC) serves as the only definitive clearinghouse of evidence-based and community-informed guidance addressing delinquency prevention, crime reduction, and community violence intervention through the lens of gang issues. Established in 1995, NGC is an authoritative source for emerging trends, research-based knowledge, and data-driven tools for those engaged in developing outcome-driven prevention, intervention, and focused suppression practices to reduce gang-related crime and violence. NGC advocates comprehensive, multi-sector, balanced approaches to improve community safety and ensure that youth and families impacted by gangs receive equitable access to services and opportunities.

The Institute for Intergovernmental Research (IIR) supports the delivery of services for NGC through the following activities: 

  • Track research and trends for the development of practitioner-oriented publications and resources;
  • Enhance the content of the NGC website; 
  • Provide opportunities for virtual peer-sharing experiences among stakeholders in communities with emerging and entrenched gang issues;
  • Provide onsite and online training in street gang investigations, gang intervention, the comprehensive gang model, and other violence prevention topics; 
  • Provide coordination for the G.R.E.A.T. national program; and 
  • Provide technical assistance to OJJDP-funded project sites addressing gun and gang violence.

Provider Organization

Institute for Intergovernmental Research (IIR)
Award Details


NGC provides general, focused, tailored training and technical assistance (TTA). Available services include correspondence for information, referrals, and resource dissemination. Focused TTA facilitates peer-to-peer information exchanges to uplift best practices and practitioner expertise. Training services include the Street Gang Investigation Training and Online Street Gang Intelligence Training for criminal justice stakeholders and other topic-specific webinars for multi-sector audiences. NGC is the leading resource for training in implementing the OJJDP Comprehensive Gang Model, with step-by-step support for the model's community assessment and implementation efforts.

NGC provides extensive, tailored, onsite, and virtual TTA to communities that want to implement comprehensive, community-based, and outcome-driven gang and gun violence reduction initiatives, including a continuum of community mobilization, prevention, intervention, focused suppression, re-entry, and systems improvement strategies. NGC is the leading resource for training in implementing the OJJDP Comprehensive Gang Model, with step-by-step support for the model's community assessment and implementation efforts.

NGC provides training and resource coordination for the Gang Resistance Education And Training (G.R.E.A.T.) national program. This school-based 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 preventing violence, especially gang-related violence.


  • Community Members
  • Court Personnel
  • DMC Coordinators
  • Detention/Corrections Staff
  • Faith-Based Organizations
  • Families
  • Juvenile Justice Specialists
  • Law Enforcement
  • Mental Health Professionals
  • Mentoring Professionals
  • Nonprofit Organizations
  • Other
  • Parole
  • Probation Officers
  • Prosecutors
  • School Personnel
  • Social Services
  • State Advisory Groups
  • Students
  • Tribal Community
  • Youth
  • Youth Advocates
  • Youth Services Professionals


Resources on the public website, including podcasts, webinars, and videos, are accessible to all.

TTA on comprehensive violence reduction, including gang and gun violence, is prioritized for OJJDP grantees. There is 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; "Interrupting the Cycle of Youth Violence" webinar series; "Voices From the Field" podcasts; "Gang-Related Federal and State Legislation Database"; "Community Gang Assessment Guide"; "Outreach Worker Safety Tips"; and the "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.

National Gang Center Staff
[email protected]

  • Access to Education
  • Aftercare/Reentry
  • At-Risk Behavior
  • Bullying
  • Case Management
  • Children Exposed to Violence
  • Community-Based Prevention
  • Cultural Competency
  • Delinquency Prevention
  • Diversion
  • Evaluation
  • Evidence-Based Practices
  • Family Engagement
  • Gangs
  • Gender Responsive Services
  • Graduated Sanctions
  • Gun Programs
  • Information Sharing
  • Job Training
  • Planning and Administration
  • Performance Measures
  • Positive Youth Development
  • Probation
  • Program Design, Planning and Partnership Development
  • Program Management
  • Program Operations
  • Protective Factors
  • Reentry
  • Risk Factors
  • School Programs/School Safety
  • Strategic Community Action Planning
  • Trauma
  • Truancy
  • Training for Law Enforcement/Court Personnel
  • Tribal Youth
  • Violence Prevention
  • Youth Advocacy
  • Youth-Focused Policing Strategies
  • Youth Involvement

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