Go to the closest feed store and tell them you are looking for eggs....they will know who buys feed and can do some inquiry for you.....You could even check some www sites...I see adds from time to time on the chicken sites.....

if that fails, try eggbid.com

EBAY HAS ALOT OF THEM

Make sure to find them a nice home BEFORE the project starts. Baby chicks and ducklings grow very fast and all too often the classroom is ill prepared to handle a brood of chicks. Good luck and have fun!