I hatched eggs in my classroom for many years......teaching not only embryology and poultry science, breeds etc, but infusing a strong unit on humane education and how chickens are treated in today's world where they are often considered an unfeeling product rather than a sentient being. Please make sure that there is somebody, even you, who wants the chicks that hatch. I have gotten calls where people have done this project and then have no idea what to do with or to whom to give the chicks. So many important lessons can be taught in a set up between children and animals.