In or der to e nsur e normal tea ching or der, prote cting st ude nts ' hea lthy growt h, ensuri ng that nati onal ( property) is not l ost , to prevent or minimize the occurrence of safety accidents, foll ow the "prevent, rescue each ot her, ens ure safety and reduce l osses" pri nci ple, a ccording t o the l ocal conditi ons, make t he manageme nt system. 1, t he pri nci pal is t he responsi bil