Not worth what it costs (even if its free)

In principle, this is a good idea. Schools often deploy sophisticated network systems utilizing multiple subnets. However, in real use terms, the app doesnt solve the issue of firewall and other protective measures. If you werent able to connect using AirServer to begin with, Im guessing the school district did not intend for you to do so with or without this app. Looks like its back to tethering to make AirServer work.

assistive tech consultant about AirServer Connect, v1.0