Sometimes chicks hatched at schools (or any incubators) have problems that are not disease related, but glitches during heat and humidity changes during incubation. Often the incubators are not top of the line and cannot be monitered regularly, such as weekends. And hate to say it, but some children do not handle them carefully. Also temperature, food and water after hatching is pretty touchy in a situation that may not be ideal. Those that thrive are lucky chicks--and you may just have gotten an unlucky one. Unlikely to be any disease, but the rest of your flock may do him in! So be very careful! Good luck, CJR