The Census Bureau reports that 5.2 percent of school-age children (2.8 million) were reported to have a disability. The American Community Survey defines a person with a disability as a person having a “vision, hearing, cognitive, ambulatory, self-care, or independent living difficulty.” Per the American Community Survey, the most common type of disability diagnosed in school-age children is cognitive disability, which they define as “serious difficulty concentrating, remembering, or making decisions.”