Shamrock, Texas (CNN) — A Texas school district is taking its security plan very seriously.
Shamrock ISD posted signs at its high school and elementary schools warning that the staff is armed and may use whatever force is necessary to protect the students.
The school board voted unanimously in July to allow trained staff members to have a firearm on campus.
The district's $150,000 security plan also includes bullet proof windows, 30 security cameras and an intercom system.
The superintendent says the signs were not necessarily motivated by the elementary school shooting in Newtown, Connecticut, in December.
He says the new security plan for the district has been in the works for over a year, and the signs were just a part of it.