Okla. Stat. tit. 59, § 1606

A. The Board of Examiners for Speech-Language Pathology and Audiology shall waive the examination and grant a license to applicants who present proof of current licensure in a state or country whose requirements for licensure are substantially equivalent to those of the Speech-Language Pathology and Audiology Licensing Act. B. The Board shall waive the examination and grant a license to those who hold the Certificate of Clinical Competence of the American Speech-Language-Hearing Association or its current equivalent in the area for which they are applying for licensure, provided the requirements for such certification are equivalent to or greater than those for licensure.