N.Y. Educ. Law § 282
The commissioner is authorized to approve the establishment of school library systems, each system to be composed of school districts which are located within a board of cooperative educational services area, or a school district serving a city with a population of one hundred twenty-five thousand or more, or combinations thereof. The systems may include non-public school libraries as defined in regulations to be promulgated by the commissioner. Upon establishment, such school library systems shall be governed by either their respective boards of cooperative educational services, by boards of education in school districts serving cities with populations of one hundred twenty-five thousand or more, or by a governing body established under the plan to be submitted to the commissioner in cases of systems serving a combination of areas.
N.Y. Educ. Law § 282