In order to e nsure normal teaching orde r, protecti ng student s ' healt hy growt h, e nsuri ng that national (property) is not lost, to prevent or minim ize the occurrence of safety acci dent s, follow the "pr event, rescue each ot her, ensure safety and re duce l osse s" principl e, accor ding t o the l ocal condit ions, make the ma nagement system. 1, the pri nci pal is t he responsi bility of