In order to e nsure normal tea chi ng or der, protecti ng student s ' healthy gr owth, ensuring t hat national (pr operty) is not lost , t o preve nt or minimize t he occurrence of safety acci dents, fol low t he "prevent, re scue each ot her, ensure safety and reduce l osses" pri nci ple, a ccor ding t o the l ocal conditions, make the ma nagement system. 1, the principal i s the re sponsi bility