SHARE THIS VIDEO —
Teacher Invents Emergency School Door Lock
An Iowa teacher invents a school door lock, which is designed to be installed in seconds, to keep dangerous intruders out of classrooms. KWQC's Tiffany Liou reports.
we and our partners use cookies on this site to improve our service, perform analytics, personalize advertising, measure advertising performance, and remember website preferences. by using the site, you consent to these cookies. for more information on cookies including how to manage your consent visit our cookie policy.