Wash. Rev. Code § 41.04.012
(1) In all competitive examinations, unless otherwise provided in this section, to determine the qualifications of applicants for public offices, positions, or employment, either the state, and all of its political subdivisions and all municipal corporations, or private companies or agencies contracted with by the state to give the competitive examinations may, at the discretion of the agency head within the hiring organization, add a maximum of 15 percent to the passing mark, grade, or rating only, based upon a possible rating of 100 as a perfect percentage in accordance with any of the following qualifications:
[ 2024 c 330 s 1.]