Mental retardation is a form of developmental disability characterized primarily by an intelligence quotient (IQ) that is significantly below average. Other developmental disabilities include cerebral palsy, dyslexia, and certain learning disorders. An education program for a student with mental retardation varies depending on the student's level of disability. Instruction may center on developing communication, socialization, or daily living skills. Many students with retardation receive services in regular classes in their local schools. Others with more profound levels of retardation may attend classes in specialized schools or hospital facilities designed for students with special needs. See also Education of Students with Mental Retardation.