Okla. Stat. tit. 59, § 59-1005: Examinations

(a) Examinations shall be uniform and shall be practical in

nature but sufficiently strict to test the qualification and fitness

of the applicant as a journeyman plumber or as a plumbing

contractor, as the case may be. It shall be in whole or in part in

writing.

(b) Regular examinations shall be held at least twice each year

and special examinations may be fixed by the Committee. Any

applicant initially failing to pass the examination shall not be

permitted to take another examination for a period of thirty (30)

days, and thereafter any such applicant subsequently failing to pass

the examination shall not be permitted to take a subsequent

examination for a period of ninety (90) days.