The exemptions set out in §
18.2-308 shall apply, mutatis mutandis, to the provisions of this section. The provisions of this section shall not apply to (i) persons who possess such weapon or weapons as a part of the school's curriculum or activities; (ii) a person possessing a knife customarily used for food preparation or service and using it for such purpose; (iii) persons who possess such weapon or weapons as a part of any program sponsored or facilitated by either the school or any organization authorized by the school to conduct its programs either on or off the school premises;
(iv) any law-enforcement officer;
[emphasis added - note duty status is not mentioned] (v) any person who possesses a knife or blade which he uses customarily in his trade; (vi) a person who possesses an unloaded firearm that is in a closed container, or a knife having a metal blade, in or upon a motor vehicle, or an unloaded shotgun or rifle in a firearms rack in or upon a motor vehicle; or (vii) a person who has a valid concealed handgun permit and possesses a concealed handgun while in a motor vehicle in a parking lot, traffic circle, or other means of vehicular ingress or egress to the school. For the purposes of this paragraph, "weapon" includes a knife having a metal blade of three inches or longer and "closed container" includes a locked vehicle trunk.