​ ​It took a passing motorist to report a fire that contractors were apparently trying to put out themselves at Stephen J. Gerace School Monday. Fire officials said workers replacing the roof of the school had not reported the blaze by the time police received the call from the passerby. In addition, because construction was taking place at the school, the fire alarm system—with permission of fire officials—had been disarmed because of the number of false alarms that would ha