Okla. Admin. Code § 150:15-9-2
All applicants for certification must be citizens of the United States, attend a certification-training workshop and pass a certification examination. Applicants who fail to pass the required examination may apply to re-test after one year.
Added at 15 Ok Reg 2937, eff 3-30-98 through 7-14-99 (emergency)
Added at 16 Ok Reg 3387, eff 8-12-99
Amended at 33 Ok Reg 1281, eff 9-11-16