(a) To obtain a certificate of registration under this chapter, an applicant must pass a written examination prescribed by the department that provides evidence satisfactory to the department that the applicant is qualified for registration under this chapter.
(b) An applicant for a certificate of registration may not take the examination unless the applicant pays the examination fee prescribed by the commission by rule.
(c) In evaluating an applicant's performance on the examination, the department shall carefully consider the applicant's knowledge and understanding of the principles of sanitation and the physical, biological, and social sciences.