"I was absolutely BLOWN AWAY by their spirit and energy," the 'Moana' actor said on Instagram after meeting the school's football team

Students and teachers at Apalachee High School returned to campus on Monday for the first time since police say a 14-year-old student shot and killed four people on school grounds.

Barrow County Sheriff Jud Smith called the return "a huge step for us healing" in a briefing with reporters ahead of an open house for students. "Unfortunately our most vulnerable were attacked — our kids and our teachers," he said. "But what evil did not plan for was the resiliency and the strength that they have."