N.Y. Educ. Law § 2101

§ 2101. Officers of district. 1. Each common school district shall\nhave one or three trustees as the district determines, a collector\nexcept in first class towns and except as may be otherwise provided by\nlaw, and if the district so decides a treasurer.\n 2. Each union free school district shall have a board of education\nconsisting of from three to nine trustees as the district shall\ndetermine.\n