The Nashville school principal ran towards the gunfire as a former student tried to mow down her child pupils.
Covenant School Principal Dr Katherine Koonce, 60, was left for dead in one of the facility's corridor - which pointed to her having a "confrontation" with the shooter.
Audrey Hale, a transgender man who used he/him pronouns and called himself Aiden, blasted his way through a locked glass door at the entrance of the building at around 10.13am Monday.
