The document summarizes key information about deafness and hard of hearing, including:
1) It defines deafness and hard of hearing, and provides statistics on prevalence nationally and locally.
2) It discusses the history and development of education for the deaf, including the first schools established in Europe and America.
3) It outlines the major causes of hearing loss in children and lists common assistive technologies and support organizations.
4) It emphasizes the importance of early testing and intervention to support language development and cognitive abilities in children with hearing loss.