100
"Deafness means a hearing loss that is so severe that the child is impaired in processing linguistic information through hearing, with or without amplification, and that adversely affects a child's educational performance. Hearing loss means a loss in hearing, whether permanent or fluctuating, that adversely affects a child's education performance but that is not included under the definition of deafness in this section."
What is IDEA's definition of deafness and hearing loss?