Allen,
While I appreciate you responding to my request, answering with the obvious is really not a help. I have researched at length on this forum. Clearly, many people have trouble with Apple TV, especially on 802.1X networks. The device is an amazing one, WHEN it works.
As we have found numerous times with Apple, their products tend to give unreliable results and there is little to no documentation to go with them. Often, they don't work the same way twice. That is what we have gone through trying to connect this device.
For those that are reading this item, our solution was to unplug the Apple TV, bring it home and plug it into our network. We were able to restore all of the firmware that way and then take it back to the school where we are attempting to hook it up. At this point, we still have had no luck in completing the connection. What a shame, as we would like to install one in each of the classrooms in our building. At this point, it is not looking good!