The best way to predict the reading skill of a hearing-impaired student is by evaluating the student’s signing ability. The stronger the signing ability, the stronger the reading ability. Therefore, students who learn how to sign have a stronger probability of becoming fluent readers. This may be true because of the visual manner that many hearing-impaired students use to read. They connect the words to their ASL signs, rather than to their sounds.
In these ways, hearing impairment and reading performance are strongly intertwined, although insufficient research exists to explain clearly all aspects of their relationship.