In order to ensure normal teaching orde r, protecting students ' healthy growt h, ensuri ng that nati onal (pr operty) is not lost , to preve nt or minimize t he occurrence of safety accide nts, foll ow the "preve nt, rescue ea ch othe r, ensure safety and reduce losses" pri nciple, a ccording t o the l ocal conditions, make the management system. 1, t he pri nci pal is the responsibility of schoo