Shaken by the massacre at Sandy Hook Elementary School and determined to prevent future tragedies, a team of high school students in Washington, D.C. has invented a new locking device for classroom doors. It probably wouldn't have prevented the killing of a teacher at a Nevada middle school Monday, but the young inventors hope the device could keep students and teachers safe if a heavily armed intruder approaches.
PHOTOS: Young Inventors' Best Tech
Currently the classroom doors don't lock at Benjamin Banneker Academic High School, a public school located across from Howard University in Washington, D.C. Like schools all across the country, they can't be locked from the inside due to fire safety regulations.
At Sandy Hook last December, teachers hid students in bathrooms and closets while trying to protect them from shooter Adam Lanza.
Ten Benjamin Banneker Academic High School students, including Anny Harvey, Deonte Antrum and Mark Miranda, led by math teacher John Mahoney began working on a reliable, affordable and easy-to-use device that teachers could place quickly to prevent a classroom door from opening. The device, which they call Dead Stop, consists of a PVC pipe that's hinged on one side and can be locked on the other side with a steel pin. Fitted over a hydraulic door closer, the device is designed to prevent the door hinge from widening.