Okla. Stat. tit. 74, § 1310.2

A school district shall pay fifty percent (50%) of the cost of the individual health care premium amount for school district employees who are not otherwise covered pursuant to Section 1310.1 of this title or Section 26-105 of Title 70 of the Oklahoma Statutes, if such employee elects health care coverage under a plan offered by a school district, including a plan offered by the Oklahoma Health Care Authority or a self-insured plan offered by the school district.