Are you allowed to contribute to existing programs? If so, then maybe take a look at some of the programs that are having budget cuts and really struggling. That's most of the poverty programs. I'd particularly look at Head Start. They are getting such severe budget cuts as to appear that someone is trying to drive the program out of existance. And it is a program where every dollar pays off, as public schools would spend a lot more on remediation later if these children didn't get the help they are getting in Head Start. There is research that backs that up.

It's too bad you don't get real money to do this with. I think students who are enthusiastic and just learning this stuff could make a huge difference in the world.