How can I edit a website while not being on neocities.org?

Ok, this probably needs some context.

I go to school that has a firewall/proxy and a bunch of other things. Sometimes they give us free time to just do whatever we want as long as we're being productive. I want to work on my website, as any reasonable person would. The only problem being that neocities.org is blocked for "proxy avoidance". However, any website hosted on neocities, (something like test.neocities.org is NOT blocked.) neocities.org/dashboard is blocked. Is there any way to make edits to my website?

Also I'm being a responsible human being and getting my schoolwork done in case anyone cares lol