RCW 28A.600.455: Gang activity—Suspension or expulsion.

(1) A student who is enrolled in a public school or an alternative school may be suspended or expelled if the student is a member of a gang and knowingly engages in gang activity on school grounds.

(2) "Gang" means a group which: (a) Consists of three or more persons; (b) has identifiable leadership; and (c) on an ongoing basis, regularly conspires and acts in concert mainly for criminal purposes.