ADHOC would be from a LAPTOP to The Rovio and your school network would not even be used.
If you are using your school network you need to know the Wireless Protocol such as WEP or WPA. Most likely you are correct that it is a firewall issue. I would bet that the port is being blocked somewhere. If you are just wanting to access the Rovio for show and tell then ADHOC would be the best way to do this. You can set up ADHOC at you house if you have a laptop and a Rovio. If you want to use the school's network you will have to have the IT department set up a port forwarding rule that will route to your Rovio and also set that port up in your Rovio, it is in the settings/ network/ WEB PORT.
Rovio Commander II
Record Video, Motion Detect, Sentry Paths and more. All features built in. <br>