Okla. Stat. tit. 70 § 13-101
The several school districts of Oklahoma are hereby authorized to provide special education and related services necessary for children with disabilities as hereinafter defined. Two or more school districts may establish cooperative programs of special education for children with disabilities when such arrangement is approved by the State Board of Education. Funds may be expended for school services for an additional period during the summer months for approved programs for qualified children with disabilities, provided their individualized education program (I.E.P.) states the need for extended school year special education and related services. Children with disabilities shall mean children, as defined in the Individuals with Disabilities Education Act (IDEA), P.L. No. 105-17, who are three (3) years of age.
Provided, on and after July 1, 1991, children from age birth through two (2) years (0-36 months) of age who meet the eligibility criteria specified in Section 13-123 of this title, shall be served pursuant to the provisions of the Oklahoma Early Intervention Act. The attendance of said children in special education classes shall be included in the average daily membership computations for State Aid purposes.
The State Board of Education is authorized to modify and redefine by regulation the eligibility definitions whenever such modification is required to receive federal assistance under the Individuals with Disabilities Education Act (IDEA), P.L. No. 105-17. Rules developed pursuant to Section 18-109.5 of this title shall provide for such modification and revised definitions.
It shall be the duty of each school district to provide special education and related services for all children with disabilities as herein defined who reside in that school district in accordance with the Individuals with Disabilities Education Act (IDEA), P.L. No. 105-17. This duty may be satisfied by:
Okla. Stat. tit. 70, § 13-101