See if your school cafeteria staff will help you out.. they may?? If not, they may at least allow you to use their kitchen. See if you can get some of the office staff to help you whip up some pancakes, bacon and sausage.. maybe see if you can get a store to donate the supplies you need too.. Also see if you can get them to donate some bagels and cream cheese, as well as donuts.. If you have a PTO/PTA ask for their assistance in getting some donations for the breakfast... don't forget the OJ for them too... and see if you can get it donated.. I work with a teacher, she goes to places like BJ's, Costo, Wal-Mart & Publix and is always getting goodies donated for the students to reward them with food parties.. sometimes even Domino's, KFC and Pizza Hut.. She will purchase some and they will donate some... you have everything to gain by asking them... give it a try...
There may even be a place that does breakfast in your area willing to do it for the kids.. you never know.. we have a place called "Grandy's" by us.. and they have done that for our students on many occasions...