Wash. Rev. Code § 28A.320.235
(1) By the beginning of the 2025-26 school year, each school district board of directors shall adopt or revise as necessary policies and procedures governing requested reviews and removals of supplemental instructional materials. The policies and procedures must:
(d) Require, if a resolution cannot be agreed upon with the parent and the school principal, and following a review of the supplemental instructional materials by the principal, in consultation with a teacher-librarian of the school district if one is available, the principal to provide a written decision on whether to remove the materials within:
(3) For the purposes of this section, the following definitions apply:
(b) "Supplemental instructional materials" or "materials" means:
[ 2024 c 316 s 2.]