Okla. Stat. tit. 70, § 24-131
The superintendent or principal of any secondary, middle or elementary school shall have the authority to order any person out of the school buildings and off the school property when it appears that the presence of such person is a threat to the peaceful conduct of school business and school classes. Any person who refuses to leave the school buildings or grounds after being ordered to do so by the superintendent or principal, shall be guilty of a misdemeanor and upon conviction thereof shall be punished by a fine of not more than Five Hundred Dollars ($500.00) or by imprisonment in the county jail for not more than ninety (90) days, or by both such fine and imprisonment.
Laws 1973, HB 1274, c. 145, § 1, emerg. eff. May 14, 1973.