In order to e nsure normal tea chi ng order, protecti ng students ' healthy growth, e nsuring that national (property) is not l ost, to prevent or minimize the occurre nce of safety accide nts, follow the "preve nt, rescue ea ch othe r, ensure safety and reduce losses" pri nci ple, a ccording t o the l ocal conditi ons, make the ma nagement system. 1, the principal i s the responsi bility of schoo