N.Y. Education Law § 2502
4. a. Each board of education may upon its own motion, and shall upon a written petition, subscribed by not less than five hundred qualified voters of the district, cause to be submitted at the annual school election a proposition to increase or decrease the number of members of such board to a number specified in subdivision two of this section; or a proposition to increase or decrease the term of office of members of the board of education in accordance with subdivision three of this section. b. The notice of any annual school election at which a proposition shall be submitted pursuant to paragraph a of this subdivision shall include a statement that such proposition will be so submitted. In the event that the board of education fails or refuses to include such information in such notice, the commissioner of education may prescribe the manner in which notice of the submission of such a proposition shall be given. c. Upon the adoption of a proposition to increase or decrease the number of members of the board of education the members of such board then in office shall continue in office for the balance of their respective terms. If the proposition so adopted requires an increase in the number of board members, a sufficient number of members of such board shall be elected at the annual election immediately succeeding the election at which such proposition was submitted, to effect the necessary increase. If the proposition so adopted requires a decrease in the number of board members, no election of board members shall be held in such district until the election of a member or members shall be necessary to maintain the number specified in such proposition. The offices of those members whose terms so expire without the election of a successor shall terminate with the expiration of such term. Succeeding members of such board shall be elected at annual school elections in such years and in such numbers and for such terms of office as shall be determined by resolution of the board of education and approved by the commissioner of education, so that as soon as practicable:
5. a. The members of a board of education of a school district which after July first, nineteen hundred fifty, shall become a city school district, as defined in subdivision sixteen of section two of this chapter, shall continue in office until the expiration of their respective terms of office in those cases where such terms of office expire with the thirtieth day in June and in all other cases such members shall continue in office until July first next succeeding the date upon which their respective terms of office would have otherwise expired. b. If the total number of members elected to serve on any such board of education shall be either five, seven or nine, such board shall continue to be composed of five, seven or nine members, as the case may be, subject to change in accordance with subdivision four of this section. c. If the total number of members elected to serve on any such board of education shall be other than five, seven or nine, such board of education shall cause to be submitted at the next succeeding annual school election, held in accordance with article fifty-three of this chapter, propositions to determine whether the number of members of such board shall be five, seven or nine. If the proposition adopted thereat requires an increase in the number of board members, a sufficient number of members of such board shall be elected at the annual election immediately succeeding the election at which such proposition was submitted, to effect the necessary increase. If the proposition so adopted requires a decrease in the number of board members, no election of board members shall be held in such district until the election of a member or members shall be necessary to maintain the number specified in such proposition. The offices of those members whose terms so expire without the election of a successor shall terminate with the expiration of such term. Thereafter, such board of education shall be composed of the number of members specified in the proposition for which the greatest number of valid votes shall have been cast, subject to change in accordance with subdivision four of this section. d. Succeeding members of any such board of education shall be elected at annual school elections in such years and in such numbers and for such terms of office as shall be determined by resolution of the board of education and approved by the commissioner of education so that as soon as practicable: