Like SM, I couldn't begin to read the posted letter, because I'm old and my eyes don't work the way they used to, in spite of bifocals........ lol
I retired from the School District in my county, a little over a year ago. Our district has 70+ facilities throughout the county and because I worked in the environmental department, I was from campus to campus, every day. All of the schools had "armed guards" in the form of resource officers.