In or der to e nsure normal teaching order, prote cting students ' healthy growth, e nsuring that national (property) is not lost, to pr event or mi nimize the occurrence of safety accidents, foll ow the "prevent, re scue ea ch other, ensure safety and re duce losse s" principle , according to t he local conditi ons, make t he manag ement system. 1, the principal i s the re sponsibility of school