Conn. Gen. Stat. § 7-380c

(b) Notwithstanding the provisions of section 7-371 , or any other public or special act or charter or ordinance or resolution which limits or imposes conditions on the final maturity of, or the due date of the last sinking fund payment for, bonds issued by any municipality for a school building project, the last installment of any series of such bonds shall mature, or the last sinking fund payment for such series of bonds shall be due, not later than thirty years from the date of issue of such series. For purposes of this subsection, “school building project” means the construction, purchase, extension, replacement, renovation or major alteration of a building to be used for public school purposes, including the equipping and furnishing of such construction, purchase, extension, replacement, renovation or major alteration, the improvement of land therefor the improvement of the site of an existing building for public school purposes or the purchase cost of a site for public school purposes. “School building project” does not include any project authorized by the General Assembly pursuant to chapter 173 prior to July 1, 1996, or the purchase of equipment or the minor alteration or improvement of a building, land or site to be used for public school purposes, unless such purchase, minor renovation, alteration or improvement is in conjunction with a project that otherwise qualifies as a school building project.