Conn. Gen. Stat. § 12-40a

(b) Any person may participate in training on assessment practices prescribed by said committee. Upon completion of the requirements provided for in regulations adopted under subsection (a) of this section and successful completion of any examination prescribed by said committee, any person shall be recommended to the Secretary of the Office of Policy and Management as a candidate for certification as a certified Connecticut municipal assessor. The Secretary of the Office of Policy and Management shall certify any qualified candidate recommended by said committee as a certified Connecticut municipal assessor and may rescind such certification for sufficient cause as said secretary may determine. Such certification shall be valid for five years from the date of issuance. Said secretary may certify a candidate who has not completed such training provided such candidate has experience in Connecticut assessment practices to such extent, determined by said secretary, as to make it unnecessary to complete such training; provided, such candidate shall be required to successfully complete any examination prescribed by said committee.