A Minnesota school district where two students were killed in a 2003 shooting unveiled a new device Tuesday aimed at adding a last-ditch layer of safety for teachers and students: ballistic whiteboards.
The Rocori School District has acquired nearly 200 of the whiteboards, made of a material touted by its manufacturer as stronger than that in police-issue ballistic vests. The 18-by-20-inch whiteboards can be used by teachers for instruction and used as a shield in an emergency.