Teachers bullied by administration is very common in certain geographical areas in Fairfax County Public Schools. Teachers bullying other teachers at times to get them out of the school or fired.
I experienced "harassing supervision” a school principal near by Willow Springs Elementary School. This principal made teachers uncomfortable in the hope that they will voluntarily leave their positions and this school experienced high turnover.
The lack of an effective, rigorous and fair teacher evaluation system fuels the need and incentive for principals to use harassing supervision. Examples of harassing supervision included reassigning a teacher who had taught 5th grade for many years to teach 1st grade, frequent impromptu classroom observations of targeted teachers, and giving an overweight teacher a classroom that was up several flights of stairs.
I am certain that teachers have went to Human Resources but they always side with the principal.
This is a good article: https://fryed.wordpress.com/2012/04/14/when-the-principal-is-a-bully-5/