Ronald Stephens, executive director of the National School Safety Center, said school shootings motivate school officials to take a closer look at their own methods for handling violence.
"After Columbine, (officials) certainly enhanced security plans and school safety plans," he said. "The question is how you create safe schools without turning them into fortresses."
Stephens said improvements to safety plans included minimizing the number of entrances and exits and developing protocol to deal with threats made by students.
Chapel Hill-Carrboro City Schools officials said they think the methods employed by local schools are effective in preventing crime. Steve Scroggs, assistant superintendent for support services for the district, said the system has heightened security in schools during the past year. He said metal detectors were put in place at sporting events after shots were reported but not verified at a Chapel Hill High School football game earlier this year.
He added that one of the system's main goals in dealing with potential problems has been to develop a uniform plan for all schools to follow in case of emergency.
"(We) needed to be consistent in our response pattern," Scroggs said. "Gain consistency on a very scattered plan about safe schools -- (that's) one of the lessons learned."
But Jane Grady, assistant director of the Center for the Study and Prevention of School Violence at the University of Colorado at Boulder, said it is impossible to prevent violence with plans designed only to keep weapons out of schools.
Instead, Grady stressed that combating violence in schools should be a community issue.
"We'd be fooling ourselves to say everything can be prevented," she said. "We need to improve the environment. Keeping weapons out of schools is not the problem."