[BlueMelon]

Hostgator sometimes runs a deal of first month free, you simply just cancel afterwards.
But there is also those free websites that offer hosting... They will be more then enough for a simple school project.

There is also:
http://www.biz.nf/ (Claims to offer free .co.nf domain)
http://www.freehostingeu.com/
http://www.freehostia.com/
http://byethost.com/