Article Photos: U.S. school safety stats 17/47

Parents walk away from the Sandy Hook Elementary School in Newtown, Conn. where authorities say a gunman opened fire, leaving 27 people dead, including 20 children, Friday, Dec. 14, 2012. (AP Photo/The Journal News, Frank Becerra Jr.) MANDATORY CREDIT, NYC OUT, NO SALES, TV OUT, NEWSDAY OUT; MAGS OUT ORG XMIT: NYWHI113