Hardened schools like missile silos or prisons. A bad idea for education.

Someone at NRA says schools should become the most hardened target in America to prevent school shootings. There are a lot of real hard targets in USA; like nuclear missile silos and prisons. Do we really want our schools to be that? On the other hand, vocational counselors often call for our schools and universities to be more open to people and input from various fields of work. Schools should become less like ivory towers so they can be permeated by the expertise from the larger community. Bring in experts from industry and other walks of life to help build that bridge to the world beyond school. That's not being hardened. We need to find better roads to school safety. Less compartmental thinking.