Perhaps a racing game..
That could be cool if you put in AI cars and design some nice tracks plus it shouldn''t be too hard to program if you keep the physics somewhat unrealistic.

Even better, an alien racing game!

Scientists from your home world have discovered a strain of DNA that only seems to occurr in Earth cattle & humans who drive pickup trucks alone late at night. This DNA has the chemical makup that lends itself to be used in super-efficient fuel cells that can provide an endless supply of energy to your resource-depleted planet.

However, members of a competing alien race have found a way to transform this energy-producing chemical into weapons of mass destruction.

Now you must race against members of the other race to recover samples of this DNA and return them to your home world, all the while avaoiding discovery by the Earth media & governments. Just think about all the sweet alien vehicles you''d get to make!

(Sorry for the weird idea, I''m at work and I''m kinda bored).

"If consquences dictate our course of action, it doesn''t matter what''s right, it''s only wrong if you get caught."
- Tool

Remember its not just the programming, you need decent art work. Keep that in mind when you decide what to make.

Anyway, here''s a few ideas:
Checkers with a 3d view ( simple in graphics and code, and familier to teachers )
A sports game with the school team.

Try to think of something to do with the school, and as someone else said make it nonviolent.


Jack

Ooh yeah! A soccer or dodgeball game or sometin. Mmm so many fond Super Dodgeball memories...

i like the idea about the alien flying-saucer flight sim... but you MUST include an option to anally probe the hicks you beam up from the trailer park...

Well I liked the idea of a saucer flight sim, I wouldnt bother with the beam ups and weapons of mass destruction but maybe an obstacle course or something with rings to fly through like the training section in the first Star Fox game.

I liked the checkers idea too although id do chess instead. Then when you capture a piece it animates the pieces in 3D. The only problem with chess and checkers is AI unless its strictly a 2 player game.