Today's killings of at least 29 people on the campus of Virginia Tech is among the worst school shootings in U.S. history. Here's a look at some other notable attacks on U.S. campuses:
Oct. 2, 2006: A gunman took about a dozen girls hostage, killing at least three of them, at a one-room Amish schoolhouse in Pennsylvania's Lancaster County, police said. The shooter was among the dead, and a number of people were injured.
Sept. 29, 2006: 15-year-old Eric Hainstock brought two guns to a school...Full Story