Okla. Const. art. I, § 5
Provisions shall be made for the establishment and maintenance of a system of public schools, which shall be open to all the children of the state and free from sectarian control; and said schools shall always be conducted in English: Provided, that nothing herein shall preclude the teaching of other languages in said public schools.
Amended by Laws 1977, SJR 18, Section 1, State Question 526, Legislative Referendum 220, adopted at election held November 7, 1978.