Well, that was exactly what I thought, but I expected the URL to end in bravehost.com. I sort of doubt anyone would block delanascrochetblankets.com. Could of course be that the school blocks everything except sites that are on a short list of permitted sites. But surely that would be obvious.
Try the following URLs:
http://www.delanascrochetblankets.com
http://ladypam52.tripod.com
http://blovesbonuses.bravehost.com
from your school computer. (Just some sites picked from this and a neighbouring thred).
If they all work, the problem isn't likely to be blocking software.
Then tell us exactly what happens when you try to access your site. When it won't let you go to the website, what happens? Any error messages?
