Mo. Rev. Stat. § 346.055
An applicant may obtain a license by successfully passing a qualifying examination of the type described in sections 346.010 to 346.250, provided the applicant:
(L. 1973 H.B. 396 & 257 § 11, A.L. 1981 S.B. 16, A.L. 1995 S.B. 69, et al.)