what abt school's security????

what abt school's security???? was that driver drop them out side d school and not entered in school ???? if that so then it's definitely drivers fault. and if he sent them inside the school gate then there were no security guard or watchman on gate??? how could he so easily go out from school and no one even saw him mainly security guard??? then it's school's security's fault. hw it's possible no one even saw him or asked him????