CASTLE ROCK, Colo. (AP) -- A suburban Denver school district has come up with a clever way to increase police presence around its elementary schools -- providing wireless access in its parking lots for officers to do their paperwork.

The Douglas County school district welcomed sheriff's deputies and officers to take advantage of the service before the Sandy Hook shooting. After the attack, law enforcement leaders began directing officers to make it part of their daily routine.

Officers are permanently assigned to the district's middle and high schools, but Superintendent Elizabeth Fagen said Thursday that it wasn't practical to have officers assigned to its more than 50 elementary schools.

The district is also working on a way to assign armed school marshals to some schools each day, an approach mirrored after the federal air marshal program.