N.H. Rev. Stat. Ann. § 199:10

The chairman of the state board of education shall appoint a time and place within the district for a hearing upon every such petition, and shall give notice thereof by causing attested copies of the petition and order of notice to be posted at 2 or more public places within the district and to be given in hand to, or left at the abode of, the clerk of the district and of one of the school board, 14 days before the day of hearing.