"20th Century Fox, Fox Broadcasting, The Curiosity Company..."
"Fox TV and the Curiosity Company retain all rights to Futurama..."
askfox@foxinc.com is one email address that's pretty public... so I wonder how prompt/detailed a reply would be. Try going to
http://www.gotfuturama.com/cancelled/ for more contact addresses, or try the fox website. I couldn't find a Curiosity Company email address right off the bat, sorry!
You've probably heard this before, but it's worth saying again - Fox doesn't like fansites, and it HATES the idea of people using its copyrighted material; if you ask them straight out 'could I use some Futurama images?' they'll almost certainly say "No!", even if it is a school project.
The one way around that _might_ be to use 'promo' pics of Futurama that Fox puts out; these are designed to advertise the show, after all, and might be regarded as being in the 'public domain' i.e. not requiring explicit permission for you to use them as long as you say they're the property of Fox and the Curiosity Company... but that's a bit dodgy...
If you go to
http://leela.com.ar/miscpics/index.shtml you'll see about 2 dozen such promotional pics, under the heading "Futurama Promotionals", funnily enough!
I hope this helps get you started. Good luck with the project!
Marcus.