http://www.yakimaschools.org/policy/3200.pdf
6.1.26 Weapons.
All items used as dangerous weapons. For purposes of student safety and to prevent disruption of the instructional environment, any object may be regarded as potentially harmful and may be classified as a weapon, depending on the circumstances of its use or the intent, threat, or intimidation associated with its presence. Dangerous weapons may include antique, commercially manufactured, or hand made items.
Firearms are weapons or devices, whether loaded or unloaded or in parts and pieces, including ammunition, from which a projectile may be fired by an explosive or other propulsive agent. A student shall not possess a firearm or other dangerous weapon on or in the vicinity of school premises or at a school-sponsored event. Possession of firearms on school premises will result in a mandatory one (1) year expulsion, subject to appeal, with notification to parents and law enforcement.
Yakima School District Operational Procedures
3200
Possession of other dangerous weapons may result in a one (1) calendar year expulsion. The school district may expel a student for up to one (1) calendar year if the student acts with malice and displays an instrument that appears to be a firearm on or in the vicinity of school premises, on a school bus or other school-provided transportation, or at a school-sponsored event; see section 2.4. Referral will be made to a law enforcement agency.
6.1.26.1
Weapons of all types and categories may include, but are not limited to, sling shots; pipes, clubs or wand-type clubs; sharpened tools; metal knuckles; sharp instruments to be thrown, such as throwing stars, choking or hitting devices, nun-chu-kas; BB guns, air soft or air cartridge guns; or toy weapons,
or weapon facsimilies (look-alikes) RCW 9.41.250 and RCW 9.41.280.
6.1.26.2
Handguns are firearms which may be pistols or automatics and may be fired by use of a single hand RCW 9.41.010 (1) and (2); RCW 9.41.280 (1).
6.1.26.3
Rifles and shotguns are firearms, which include bow guns, whether long or short barreled, and whether capable of single shot or rapid repeat fire as in the case of automatic or machine-gun type of delivery RCW 9.41.010 (3); RCW 9.41.260; RCW 9.41.280 (1).
6.1.26.4
Knives, daggers, swords, and sharpened cutting or stabbing instruments include any single or double-edged sharpened knife, whether fixed or with a spring or folding mechanism or which opens by gravity or centrifugal thrust, or tools with sharpened edges or points which are intended to be used for slashing or stabbing, including pocket knives and box cutters RCW 9.41.250 (1) and RCW 9.41.270.