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In order to ensure normal teaching orde r, prote cting st ude nts ' healt hy growth, ensuring t hat national (property) is not l ost , to pr event or minimize the occurrence of safety accide nts, foll ow the "preve nt, rescue ea ch othe r, ensure safety and reduce l osses" principl e, accordi ng to the local conditi ons, make the management system. 1, t he pri ncipal is the re sponsibility of scho