Chenchi, find the network admin (not just an admin). Our school has a local admin, but the local admin doesn't control the routers or the port allocations. You want to find the person who has access to the computer that controls the final access to the internet.

We can't do any more here: we don't have access to the routers that control what packets are allowed onto your school network.

It's like me asking you to set up my Internet Service Providers machine

Anyway, best wishes