The debate over a new Conway high school started again last night. A consultant told the Conway School Board that building a second high school would cost about 46 million dollars plus another nearly five million for personnel. That would increase taxes by 6.2 mills. On the other hand, officials could add on to existing school campuses. Right now Conway has two overcrowded campuses. One for 11th and 12th graders and another for 9th and 10th graders. The district has a steady two percent enrollment growth. Instead of building a new school, board members had proposed spending about 18 million to renovate the campuses. They said that should take care of growth for the next decade and cost tax payers about four mills.