About 16 students are murdered in U.S. schools each year, which is lower than in the previous decade; 116 student deaths at elementary, middle, and high schools—on school-sponsored trips and while students were on their way to or from school from July 1999 through June 2006; there were 172 student slayings at schools from July 1994 to June 1999; the previous decade’s numbers are likely skewed because of the rash of school shootings, including Columbine, in which 12 students were killed; new numbers show massacres remain rare and that 101 of the 116 deaths between July 1999 and June 2006 involved single-victim incidents; most children are killed at home, at parties, or on the streets, the Centers for Disease Control and Prevention said.