My fever at the moment is probably causing me to miss things, but when I had hatches set up for teachers, I would have chicks ready to go the day after they were supposed to hatch in school, just in case the school hatch did not work. When nothing hatched at school, the teachers told the kids that sometimes things don't work as planned, and I bring the chicks for show and tell the following day so they can at least see a baby chick.