N.Y. Comp. Codes R. & Regs. tit. 8, § 125.8
(2) The term and hours of each kindergarten shall be substantially equivalent to those established by the school district in which it is located; kindergarten groups shall meet not less than five half-days a week. Nursery school groups shall meet at least two half-days a week.
(b) Activities.
Children shall have opportunity to choose and become involved in learning activities. These activities shall include:
(a) Curriculum and school year.