Okla. Stat. tit. 70, § 70-1-106: Public schools - Definition - What included

The public schools of Oklahoma shall consist of all free schools

supported by public taxation and shall include nurseries,

kindergartens, elementary, which may include either K-6 or K-8,

secondary schools and technology center schools, not to exceed two

(2) years of junior college work, night schools, adult and other

special classes, vocational and technical instruction and such other

school classes and instruction as may be supported by public

taxation or otherwise authorized by laws which are now in effect or

which may hereafter be enacted.