RCW 28A.635.090: Interference by force or violence—Grounds for emergency removal or exclusion—Penalty.

(1) It is unlawful for any person, singly or in concert with others, to interfere by force or violence with an employee or contractor of a public or private elementary or secondary school, an elementary or secondary student, or an official or volunteer acting as an official for extracurricular athletic activities of elementary or secondary students, while that person is in the peaceful discharge or conduct of his or her duties or studies.

(2) If a public school student interferes as described in subsection (1) of this section, the interference is grounds for the student's emergency removal, subject to RCW 28A.600.015. If a public school student interferes as described in subsection (1) of this section during extracurricular athletic activities, the student may be excluded from participating in or attending that activity.

(3) A person violating this section is guilty of a gross misdemeanor and shall be fined not more than $500, or imprisoned in jail not more than six months, or both such fine and imprisonment. Upon conviction, a person, other than a student, must be excluded from entering the school where the crime was committed or from attending the extracurricular athletic activities in which the crime was committed, for a period of no less than 12 months and no more than 18 months.

(4) As used in this section, "public school" has the same meaning as in RCW 28A.150.010.