Samson
Póg Mo Thóin
Why Do Americans Love to Blame Teachers?
Ignorance, for the most part, of what it is to teach, what's involved in teaching, and what it's actually like to be in a classroom.
Teachers are a visible and easy scapegoat, subject to blame for problems having nothing to do with teachers, problems that are often complex and that cannot be solved by simplistic 'solutions.'
And of course much of it has to do with failed, errant conservative dogma, blindly hostile to everything 'public sector.'
What "conservative dogma, blindly hostile to everything public sector," would account for the widespread hatred of teachers claimed in the OP?