Students at Francis Scott Key Elementary/Middle School in Baltimore were temporarily displaced after mold was discovered inside the walls of the building, reports indicate. School officials moved students to alternate facilities as a precautionary measure while remediation efforts were assessed. Mold growth inside wall cavities is a common consequence of water intrusion or inadequate ventilation and can go undetected for extended periods before becoming visible or triggering air quality concerns. Reports indicate the discovery prompted immediate action from school administrators, likely under pressure from parents and district health guidelines. Indoor mold exposure in school settings has been linked to respiratory irritation, headaches, and other symptoms, particularly in children who may spend several hours a day in affected buildings. The situation reflects a broader pattern of aging school infrastructure across the country, where deferred maintenance and older construction methods create conditions favorable to mold growth. Local news coverage suggests remediation timelines and return dates for students had not been firmly established at the time of the initial report.