A citizens group, determined to roll back the controversial Waterloo School District tax increase of 31.5%, will hold it’s organizational meeting Tuesday, July 20th at the Waterloo Recreation Center beginning at 7:30pm.The Waterloo School board approved the increase following a overwhelming defeat of the school district budget.Dick Berger of Junius-who is organizing the meeting, says an important announcement will be made concerning the legality of the board’s action.The meeting is open to all Waterloo School District residents.