He and another school official who entered the classroom are reported by US media to have warned the suspect that there would be no shooting in his class - at which point the gunman putdown his weapon and police officers arrested him.
In a forthcoming study of voters undertaken after the recent presidential elections, Nonna Mayer, a professor at Sciences Po, argues that the increase in support for the National Front can almost entirely be putdown to a shift in the allegiance of working-class women.