Many schools in New Hampshire enhanced their security in response to the mass shooting at Sandy Hook Elementary School in Newtown, Conn. a year ago.
Those new measures come at a big cost to school districts.
And they’re forcing school officials to decide what type of security works for their buildings and their communities.
Even the head of Nashua’s school district needs clearance before he’s allowed into any of the city’s 17 schools.
“Hi, Mr. Conrad. Left door,” the secretary inside Elm Street Middle School says over the intercom.