Voters in Newtown, Conn., have approved a plan to use nearly $50 million in state funds to demolish Sandy Hook Elementary and build a new school in its place. This photo provided by Craig Hoekenga shows his son Trey, a kindergarten student at Sandy Hook, on the school bus this year. The window has a quote from the late principal, Dawn Hochsprung, who was killed in last December's mass shooting. Craig Hoekenga/AP hide caption

itoggle caption Craig Hoekenga/AP

A Bushmaster rifle, similar to the type used by Adam Lanza during the shooting at Sandy Hook Elementary School, and some ammunition magazines. The sale and possession of this type of weapon, and high-capacity magazines, will be severely restricted in Connecticut under new legislation. Michelle McLoughlin /Reuters /Landov hide caption

itoggle caption Michelle McLoughlin /Reuters /Landov

After training, teachers and other staffers in South Dakota could choose to bring guns with them to school if their districts want to set up "sentinel" programs. Jim Urquhart /Reuters /Landov hide caption

itoggle caption Jim Urquhart /Reuters /Landov