R.I. Gen. Laws § 16-2-27

Every child who has attained, or will have attained, five (5) years of age on or before September 1 of any school year shall be eligible to attend kindergarten during all the days that the kindergartens are in session during the school year. Every child who has attained, or will have attained, six (6) years of age on or before September 1 of any school year shall attend kindergarten during all the days that the kindergartens are in session during the school year if said child has not previously attended and successfully completed kindergarten. When a child is enrolled in kindergarten, the attendance requirements of § 16-19-1 shall apply. All school districts shall provide full-day kindergarten to every eligible student pursuant to chapter 99 of this title.