#SchoolShooting

Kirk Moore, the Oklahoma principal who tackled a gunman who had entered his school, spoke exclusively to Matt Gutman about the terrifying moment and the support he's received since.

A 13-year-old student admitted carrying out the attack at the public school Instituto Sao Jose in Rio Branco, officials said.

Police in North Carolina say two teenagers were killed and several others were injured after a shooting on Monday morning near a middle school. CBS News correspondent Shanelle Kaul has more.