Schools Superintendent Erroll Davis said the school does have metal detectors.

“The obvious question is how did this get past a metal detector?” Davis asked about the gun. “That’s something we do not know yet.”

The armed resource officer who took the gun away was off-duty and at the school, but police didn’t release details on him or whether he is regularly at Price. Since 20 children and six adults were shot to death at Sandy Hook Elementary School in Connecticut in December, calls for armed officers in every school have resonated across the country.

via Armed guard disarmed teen in Atlanta school shooting, says police chief | The Salt Lake Tribune.