The Washington Hearing Impairment Calculation Worksheet is a tool used to determine a person's degree of hearing loss in the state of Washington. It is based on the American Speech-Language-Hearing Association's (ASHA) criteria for determining the severity of a hearing impairment. The worksheet involves the calculation of a person's hearing threshold levels in decibels (dB) for each of the four hearing frequencies (250, 500, 1000, and 2000 Hz). Depending on the levels of hearing impairment, the worksheet can be used to determine a person's degree of hearing loss as mild, moderate, moderately severe, severe, or profound. The Washington Hearing Impairment Calculation Worksheet is available in two versions: the Adult Version and the Pediatric Version. The Adult Version is used to assess hearing loss in adults, while the Pediatric Version is used to assess hearing loss in children. Both versions are based on the same hearing threshold calculation criteria, but the Pediatric Version has a slightly different scoring system due to the fact that children's hearing abilities differ from those of adults.