“Communication Disorder” means the impairment of speech articulation, voice, fluency, or the impairment or deviant development of language comprehension and/or expression, or the impairment of the use of a spoken or other symbol system that adversely affects educational performance and the child may need special education services as a result of the disability. The language impairment may be manifested by one or more of the following components of language: morphology, syntax, semantics, phonology, and pragmatics. (Division 2 of 123 pages quote OAR?)