Okla. Stat. tit. 70, § 70-6-106: Salary - Twelve monthly payments

Boards of education are hereby authorized to contract with and

pay all teachers in their respective districts in twelve (12)

monthly payments or fractional parts of the fiscal year, to be made

on the basis of legal contracts between said board and teachers.

Procedures for paying teachers shall be in accordance with any plan

approved by the State Department of Education.

The aggregate amount of such salary payments in any fiscal year

shall be as agreed upon by the board and the teacher. Under the

terms of a contract for a ten-month school year as defined in

Section 1-109 of this title and made in keeping with the provisions

of this section, no duties shall be expected or required of the

teacher in excess of one hundred ninety (190) days; provided,

nothing herein shall be construed as prohibiting the making of

contracts for school years of more than ten (10) months. Any

district adopting this plan of payment may make it applicable to any

or all teachers employed therein. Such plan shall be permissive

rather than mandatory and may be discontinued at the close of any

fiscal year.

All salaries paid in twelve (12) installments pursuant to the

provisions of this section shall be for calendar months or

fractional parts thereof.