U.S. flag

An official website of the United States government, Department of Justice.

What We Do


Serving those in the fields of juvenile and criminal justice, law enforcement, youth and community organizations, research, and others across the nation with responsibilities for addressing gang‐related crime and violence, the NGC provides an array of best‐practice information, resources, 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.



Resources and Tools

The NGC hosts a variety of gang-related resources and tools including guides for parents and schools, an information video on Why Youth Join Gangs, gang-related legislation, webinars, podcasts, a moderated email discussion group, an FAQ section on gangs, and more.

Assistance and Consultations

The NGC provides on‐ and off‐site technical assistance, peer‐to‐peer exchanges, and consultation to assist communities in navigating through the extensive range of strategies and programs as they build solutions that address their gang‐related problems. Request general or Comprehensive Gang Model technical assistance using one of the NGC online request forms, or through the OJJDP technical assistance system.

People standing in a row using laptops and phones

Use this form to request consultation or feedback regarding gang-related projects.

General Assistance

Binary code

Use this form to request Comprehensive Gang Model technical assistance.

CGM Technical Assistance

People putting their hands together in a circle

TTA360 is a centralized training and technical assistance request system that allows you to submit a request to any of OJJDP's providers.



The NGC offers specialized training that assists law enforcement and local community endeavors to control gang-related activity. Topics for law enforcement include street gang intelligence and investigations and gang unit supervision, as well as seminars for law enforcement chief executives. Community-based topics include training on the OJJDP Comprehensive Gang Model. Explore the listing below to see NGC training and other federal and regional training opportunities.

Online Street Gang Intelligence Training for Law Enforcement

The Street Gang Intelligence online training course is designed to assist law enforcement officers in understanding the steps involved in the intelligence process. It reviews applicable standards, suggests possible sources of information, and highlights some of the challenges encountered in collecting gang intelligence. This course is restricted to law enforcement personnel.

On-Site Street Gang Investigator Training

The NGC Street Gang Investigator Training is free of charge and offered on a regional basis. Trainings are intended for participants from all law enforcement agencies (police and sheriff) within a geographical region.

Other Gang-Related Trainings and Conferences

As a complement to training offered by the NGC, this page lists both federal and regional conference and training information.


The Gang Resistance Education And Training (G.R.E.A.T.) Program is a school‐based, law enforcement officer‐instructed classroom curriculum. The program, whose primary objective is prevention, is intended as an immunization against delinquency, youth violence, and gang membership. G.R.E.A.T. lessons focus on providing life skills to students to help them avoid delinquent behavior and violence to solve problems. The G.R.E.A.T. Program is administered by the Office of Juvenile Justice and Delinquency Prevention, a component of the Office of Justice Programs, U.S. Department of Justice. Since its inception in 1991, more than 12,000 law enforcement officers have been certified as G.R.E.A.T. instructors, and more than 6 million students have graduated from the G.R.E.A.T. Program.