The mother of the 14-year-old who has been charged with murder over the fatal shooting of four people at his Georgia high school called the school before the killings, warning staff of an “extreme

The victims of the Sept. 5 shooting at Apalachee High School in Winder, Ga. were identified as Mason Schermerhorn, 14, Christian Angulo, 14, Richard Aspinwall, 39, and Christina Irimie, 53. Both Aspinwall and Irimie taught math at Apalachee High School.