For purposes of this code, the following definitions apply.

"Disruptive student" means an elementary or secondary student under the age of 21 who is substantially disruptive of the educational process or substantially interferes with the teacher's authority over the classroom.

"Parent" means parent, guardian or person in parental relation to a student.

"School property" means in or within any building, structure, athletic playing field, playground, parking lot or land contained within the real property boundary line of a public elementary or secondary school, or in or on a school bus, as defined in Vehicle and Traffic Law 142.

"School function" means any school-sponsored extra-curricular event or activity.

"Violent student" means a student under the age of 21 who:

• Commits an act of violence upon a school employee, or attempts to do so.
• Commits, while on school property or at a school function, an act of violent upon another student or any other person lawfully on school property or at the school function, or attempts to do so.
• Possesses, while on school property or at a school function, a weapon.
• Displays, while on school property or at a school function, what appears to be a weapon.
• Threatens, while on school property or at a school function, to use a weapon.
• Knowingly and intentionally damages or destroys the personal property of any school employee or any person lawfully on school property or at a school function.
• Knowingly and intentionally damages or destroys school district property.

"Weapon" means a firearm as defined in 18 USC 921 for purposes of the Gun-Free Schools Act. It also means any other gun, BB gun, pistol, revolver, shotgun, rifle, machine gun, disguised gun, dagger, dirk, razor, stiletto, switchblade knife, gravity knife, brass knuckles, sling shot, metal knuckle knife, box cutter, cane sword, electronic dart gun, Kung Fu star, electronic stun gun, pepper spray or other noxious spray, explosive or incendiary bomb, or other device, instrument, material or substance that can cause physical injury or death when used to cause physical injury or death.

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