terrible school massacre, page-97

Obviously the staff had the safety of the childred at heart, but were impotent.
I wonder if selected staff were trained and armed such, as bank tellers used to be, would the culprit have got so far, either here or at other trageties such as at Columbine High School?
Would a parents vote for armed protection for their childen be reasonable, considering the current climate of violence, violent movies and video games, crack etc?