Mo. Rev. Stat. § 36.170: Examinations, how conducted — agencies may administer.

1. The standards of education or experience expected for a position subject to this chapter pursuant to subsection 1 of section 36.030 shall be established on the basis of specified knowledge, skills, and abilities. The director or an appointing authority may conduct such open competitive and promotional examinations as appropriate to implement the provisions of subsection 1 of section 36.030. The examinations shall be of such character as to determine the qualifications, fitness and ability of the persons examined to perform the duties of the position or class for which a register is to be established. No question shall be so framed as to elicit information concerning the political or religious opinions or affiliations of an applicant.

2. Agencies may request authority from the director, or the director may delegate authority to agencies, to conduct examinations for some or all positions or job classes. When such action is taken, the director may establish standards and guidelines to be followed.