In order to ensure normal tea ching orde r, pr otecti ng students ' healthy growt h, e nsuri ng that nati onal (pr operty) is not lost, to preve nt or minimize t he occurrence of safety accidents, foll ow the "pr event, rescue e ach othe r, e nsure safety and re duce losses" pri nci ple, a ccordi ng to the l ocal conditi ons, make the ma nagement system. 1, the pri nci pal is t he responsi bility