Conn. Gen. Stat. § 10-156: Sick leave.

Each professional employee certified by the State Board of Education and employed by a local or regional board of education shall be entitled to a minimum of sick leave with full pay of fifteen school days in each school year. Unused sick leave shall be accumulated from year to year, as long as the employee remains continuously in the service of the same board of education, and as authorized by such board, but such authorized accumulation of sick leave shall not be less than one hundred fifty school days.