If students are complaining about it, how is it NOT causing a disturbance? What is their definition of a disturbance? The flag flying in front of a student's face so they can't see the white-board?
I, personally, find the French tricolour to be a symbol of murder, theft, general lawlessness and deranged anti-clericalism, and certainly believe that the only good use for it is as something to wipe one's backside with. However, we're not banning the French tricolour, therefore I'm not on board with banning the Confederate Battle Flag either
It's called time, and it means something. People only use this flag nowadays to be obnoxious to people who have a reason to be offended by it...