You set up your own Wifi networks (at work!) with 80MHz wide channels and force our teaching spaces wireless off the first four available channels. So if any students or staff bring Nexus devices along then they won't be able to connect.
You also add to the interference on 2.4Ghz too, that is already congested and short of channel space.
I don't care how great you think your iTunes library is, this is a place of work and you are interfering with the network.