Okla. Stat. tit. 70, § 70-9-106: Insurance to pay damages - Actions against school

district.

The board of education of any school district authorized to

furnish transportation may purchase insurance for the purpose of

paying damages to persons sustaining injuries proximately caused by

the operation of motor vehicles used in transporting school

children. The operation of said vehicles by school districts,

however, is hereby declared to be a public governmental function,

and no action for damages shall be brought against a school district

under the provisions of this section but may be brought against the

insurer, and the amount of the damages recoverable shall be limited

in amount to that provided in the contract of insurance between the

district and the insurer and shall be collectible from said insurer

only. The provisions of this section shall not be construed as

creating any liability whatever against any school district which

does not provide said insurance.