This document discusses common diseases acquired from school in children, including respiratory infections like the common cold and influenza, gastrointestinal infections like gastroenteritis, and skin infections such as chickenpox, impetigo, and scabies. It recommends methods for preventing infections, including hand hygiene, cough etiquette, surface disinfection, proper food handling, and vaccinations. The document also suggests schools implement policies for early isolation of sick children, safe food handling, periodic inspections, proper disinfection, and notifications of infections.