Keeping classrooms locked against intruders is one the most urgent security priorities today. With terrible active shooting events in schools in the mind of many administrators, a teacher has developed 'The Sleeve [link no longer available]', a bracket that slides over a door's closer.
Many herald the devices as an example of ingenuity, and a valuable low-cost add that enhances school security. However, not only is the device unsafe, it violates many life/safety codes, and potentially cause a much bigger tragedy that it ever prevents.
In the note, we examine The Sleeve's problems, explain why it is a risk, and list safe alternatives.