Schools with an SRO present report about 30% fewer violent offenses than those that don’t. But it’s not for free.

“We have to do this,” says Dr. Scott Anzalone, former president of the local school board in Logan, Ohio.

School security is an estimated $3 billion industry, including things like training, armed officers, and video cameras. But there’s little evidence on what’s actually effective.

Because gun control measures haven’t gone far, schools are investing in security, says The 74’s Mark Keierleber. Those measures come with significant costs.

After a summer of protests, the city has created a task force to reconsider the function and funding for its school police force.