Hearing Impairment - Pupils with a hearing impairment range from those with a mild hearing loss to those who are profoundly deaf. They cover the whole ability range. For educational purposes, pupils are regarded as having a hearing impairment if they require hearing aids, adaptations to their environment and/or particular teaching strategies in order to access the concepts and language of the curriculum. A number of pupils with a hearing impairment also have an additional disability or learning difficulty. Hearing loss may be because of conductive or sensori-neural problems and can be measured on a decibel scale. Four categories are generally used: mild, moderate, severe and profound. Some pupils with a significant loss, communicate through sign language instead of, or as well as, speech.
A syndrome observed in children who have the following characteristics: Precocious ability to read text far above what would be expected at the chronological age. Significant difficulty understanding and using verbal language or a significant nonverbal learning disability. Difficulty in reciprocal interactions. http://www.hyperlexia.org/