While deaf and hard of hearing (D/HH) students can face challenges with hearing and listening, their experiences cannot be easily generalized. Some people who are completely deaf are still oral, while others prefer to use sign language. Others are nonsigning and prefer captions. Others simply have difficulty hearing, and can supplement their limited hearing with lipreading. What works for one person might not work for the next, so keep an open dialogue with your students.
In the United States, the vast majority of secondary students with disabilities are mainstreamed in inclusive high schools per the Individuals with Disabilities Education Act (IDEA). First passed in 1975, the IDEA is a powerful landmark civil rights law that guarantees access to a free, appropriate, public education (FAPE) in the least restrictive environment (LRE) appropriate to every child with a disability.
Before they arrive in the U.S. for a life-changing cultural immersion experience, prospective high school exchange students from around the world are expected to demonstrate their level of English ability, usually by taking a standardized test. Whichever test you use to assess your applicants, learn how to adapt it to fairly and accurately measure the skills of students with disabilities.