Members of the Hall County Board of Education are tentatively considering raising property owners’ taxes this year — an increase that would mean property owners would pay another 82 cents on every $1,000 in taxable property value. According to the state’s guidelines on taxation, any rate increase that keeps property tax revenue the same is considered a “roll-up,” which allows the school board to offset revenue lost by falling property values. At a work session Monday, the board set a preliminary rate of 18.49 mills.