In order to e nsure normal tea chi ng order, protecti ng students ' healthy gr owth, e nsuring t hat national (property) is not lost, t o prevent or minimize t he occurrence of safety accidents, foll ow the " prevent, rescue each other, e nsure safety and reduce l osse s" principle , according to t he local conditions, make the ma nagement system. 1, the principal i s the responsi bility of school