School system withdrawal vote called meaningless TRENTON — School officials say that if the town’s voters endorse a citizens’ petition asking the Board of Selectmen and School Committee to appoint a committee to draft a plan for Trenton to withdraw from the Mount Desert Island Regional School System (AOS 91), it will have no legal effect. Seventy-five registered voters signed the petition, enough to have it placed on the warrant for this year’s Town Meeting, which is tentatively set for May 18. Supporters of withdrawal maintain that taxpayers could save money if Trenton Elementary were no longer part of the school system. Withdrawal was recommended by the School Evaluation Options Committee, a group of citizens appointed by the selectmen 18 months ago to look for ways to lower the cost of education for Trenton taxpayers.