Okla. Stat. tit. 52, § 420.15

The LP-Gas Board shall provide for the holding of safety schools for the benefit of the liquefied petroleum gas dealers and employees in the State of Oklahoma, at such times and in such places as may be deemed advisable. The Board may, by lawfully adopted rules, require attendance and successful completion of courses, by in-person or virtual instruction, held as a condition precedent to retaining permits issued hereunder. Such courses shall be in the format as established by the Board in its sole discretion. The Administrator shall perform such duties in connection with those schools as the Board might direct.