Alva Review-Courier -

John S. Carlson, Michigan State University

(THE CONVERSATION) In the 25 years I’ve spent working as a school psychologist and professor of school psychology, I’ve never seen so much federal, state and local money spent to “harden” school buildings and campuses.

The term encompasses a wide array of steps being taken to keep students safe amid increasingly frequent mass shootings. Examples include arming teachers, conducting active-shooter drills and installing surveillance systems.

It’s a booming business that by 2017 had become an estimated US$2.7 billion industry with about $1.5 billion direc...