Section 4(12)(b) in Bombay Primary Education Act, 1947
(b)The vice-chairman may resign his office as vice-chairman or member by giving notice in writing to that effect to the chairman. The chairman may resign his office as chairman or member by giving notice in writing to that effect to the president of the district local board or the authorised municipality, as the case may be, Such resignation shall take effect from the date of their acceptance by the chairman or the president.