It was obvious to me, from her letter, that Shirley Stowe has never taught in a classroom.
Teachers are special people. They have the often-thankless task of preparing the next generation to face an ever-changing world. They deal with behavior problems, learning disabilities and criticism every day. Yet they show up because they care about their students. They want their students to succeed and, yes, get stressed if they do not.
If you have a problem with a superintendent, please do not tarnish all educators with your vitriol.