How can you reduce the number of possible gang members?

Be a good role model. You must set the standards for acceptable behavior and do not tolerate disrespect in the classroom.
Build positive self-esteem. Kids who have the proper self-image don't rely on gangs for recognition or status. If you see a child lacking self-esteem, hook them up with a counselor or advisor.
If you see bullies in the classroom, quickly put an end to their ways. If a child complains of a bully, don’t brush it off as “kids will be kids,” take immediate action and put a stop to it.
Discuss the dangers of gangs openly and consider bringing in a police officer to talk about gangs.
If you notice a change, monitor the child’s behavior, document instances of defiance and alert the parents as soon as possible.
If you see what you think are gang signs, logos, colors or paraphernalia, take action and have the child remove the item (if possible). Showing them that gangs are not tolerated could put an end to their involvement.
Encourage your students to be involved with school activities and athletics. Local recreation centers also offer many activities to help provide positive alternatives for your stundets.

For more information, talk with your local law enforcement team and see if they’d be willing to speak to children about gang involvement and violence, and what to do if they feel threatened. Stop in to your local police department or community center, go online or attend informational meetings to learn more about gangs in your community.