Many schools utilize proxy servers to connect to the internet.
These generally are used to establish inexpensive internet access though a single point, provide caching, and limit internet users to certain functions. The SuperFeed Server should be usable on most networks that use a proxy server assuming a few simple rules are followed. The proxy must of course be operational and enabled to allow internet access. DO NOT have any name server addresses configured. A proxy client does not need these and they can be problematic.