 An emergency — a " sudden " , " unexpected " occurrence that requires action for a situation — at schools within the district 53 scope can result in school or bus transportation facilities . This district 's policy on emergency was amended on April 30 , 2008 , which includes fire , threats or facilities , violence , school bus accident , serve weather , earthquake , hazardous spills , accidents , explosions , or floods . The policy was amended because the district recognizes the importance of emergencies , specifically during school 's session , that could be both natural and human , hence why it necessitates to develop plans for emergencies . It also maintains a " smoke @-@ free " policy , meaning that it is prohibited to smoke in a district 53 area . This rule was amended on September 26 , 2007 . 
