Ohio's public schools provide special education services to children with disabilities as early as preschool. Every year, the Ohio Department of Education reports the number of preschool children who received state-funded special education services during the previous year. The 2019-2020 school year had an overall increase of 906 (4.03 percent) preschool-age children receiving special education services compared to the prior year. Developmental Delay and Speech or Language Impairment are the most common disability categories among preschool-age children. More than 74.49 percent (17,395) of children served in preschool special education receive services under one of these two eligibility categories. [For the 2020 report, see ED624864.]