Individuals involved in administering assessment tools to students who are deaf or hard of hearing shall be proficient in the student’s primary communication mode, style, or language as determined by a language assessment consistent with the requirements of § 16-25.2-2. All assessments shall be delivered in the student’s primary communication mode, style, or language as determined by a language assessment consistent with the requirements of § 16-25.2-2, shall have been validated for the specific purposes for which they are used, and shall be appropriately normed.