Deaf / Hard of Hearing
The Individuals with Disabilities Education Act (IDEA '97) defines two terms related to hearing acuity: Deafness and Hearing Impairment. According to IDEA '97:
- Deafness means a hearing impairment that is so severe that the child is impaired in processing linguistic information through hearing, with or without amplification, that it adversely affects a child's educational performance.
- Hearing impairment means an impairment in hearing, whether permanent or fluctuating, that adversely affects a child's educational performance but that is not included under the definition of deafness.