In or der to e nsur e normal tea ching or der, prote cting st ude nts ' healt hy growt h, ensuri ng that nati onal (pr operty) is not l ost, to prevent or minimize the occurrence of safety accide nts, foll ow the " prevent, rescue each ot her, e nsure safety and reduce l osses" pri nci ple, a ccor ding t o the l ocal conditi ons, make t he manageme nt system. 1, t he pri nci pal is t he responsi b