Conn. Gen. Stat. § 12-130a

(b) Any person may participate in training courses on tax collection practices prescribed by said committee and upon completing such training courses and successfully completing any examination prescribed by said committee, shall be recommended to the Secretary of the Office of Policy and Management as a candidate for certification as a certified Connecticut municipal collector. The Secretary of the Office of Policy and Management shall certify any qualified candidate recommended by said committee as a certified Connecticut municipal collector and may revoke, suspend or deny such certification or recertification for sufficient cause as said secretary may determine. Said secretary may certify a candidate who has not completed such training courses provided such candidate has experience in tax collection practices in Connecticut to such extent, as determined by said secretary, to make it unnecessary to complete such training courses, and provided further such candidate shall be required to successfully complete any examination prescribed by said committee. Such certification shall be valid for five years from the date of issuance or until regulations are adopted pursuant to subsection (a) of this section, whichever is later.