Kirk Moore was injured as he tackled a former pupil who opened fire at Pauls Valley high school Sign up for the Breaking News US email to get newsletter alerts in your inbox Kirk Moore was injured as he tackled a former pupil who opened fire at Pauls Valley high school Sign up for the Breaking News US email to get newsletter alerts in your inbox An Oklahoma principal has been praised for preventing a tragedy at his high school by charging and disarming a former student armed with two semi-