In order to ensure normal teaching orde r, pr otecting students ' he althy growt h, ensuri ng that nati onal (pr operty) is not lost, t o prevent or minimize the occurr ence of safety acci dents, follow the "preve nt, rescue ea ch ot her, ensure safety an d reduce l osse s" principle , accordi ng to the local conditi ons, make the management system. 1, t he pri ncipal is the responsibility of scho