In Georgia, students at most Barrow County schools are returning to classrooms today, nearly a week after a 14-year-old with an assault rifle shot and killed two teachers and two students, while injuring nine others. Classes at Apalachee High School, where the shooting took place, remain canceled. The Washington Post reports the mother of the suspected shooter contacted the school on the morning of the shooting and warned a counselor about an “extreme emergency” involving her son, about a half-hour before the first shots were fired. The warning reportedly came after her son texted her the message, “I’m sorry, mom.” Separate text messages also revealed the family was in contact with school officials about the boy’s mental health a week before the massacre.