Many different jobs focus on providing services to deaf children. Teachers instruct hearing-impaired students in speech therapy and sign language in various grade levels and may help interpret sign language communication between students and their peers or teachers. These teachers also sit in on meetings with students, teachers, and families to coordinate specialized services for their curriculum and education plan. Deaf mentors work with deaf and hard-of-hearing children and their families to teach sign language and help them understand the culture within the deaf population. An audiologist performs hearing tests, monitors patient progress, and adjusts hearing aid settings children who have a hearing impairment, either from birth, illness, or injury.