Too many Airplay devices

We have a school full of AppleTVs/Projectors which we communicate with using iPads and Airplay.  When you bring up the list of Airplay devices on an iPad, it is huge.  We only want each teacher to see the AppleTV in their own classroom.  We were hoping to distribute the list using multiple Airports with different SSIDs but this doesn't work because they are all on the same underlying network.

 

Is there a way to limit the list of Airplay devices one sees on the iPad?

View the original article here