Have been at current school nearly 4 years, have always had good observations, got good OFsted observation. School has had a lot of SLT changes in my time, previous deputy is now head of school with over arching executive heads who are responsible for several other schools so only spend one day a week in each. Had someone from county in a few weeks ago who was going to do lesson drop ins- her and the head of school dropped into lesson as children had just come back from a session where they are out of class- they were in the process of sitting down and 2 children were handing the books out when the head of school and LA lady came in. They asked two children what they were learning about, who replied that they weren’t sure yet, I over heard and explained that we had only just come back from the other session and then they left. Head told me three weeks late in my appraisal that the LA lady had said my teaching required improvement as it was chaotic and the children didn’t know what they were learning and that I also wouldn’t be getting my performance related pay rise this year as I was one child short on the number I was given as a target to pass SATS despite the fact the class made incredible progress. We now have observations this week and I have double the amount of SLT coming into my lesson than any other member of staff. I had an awful class last year (35 and really bad behaviour problems) but this year my class are lovely and I was truly loving teaching for the first time in a while until all this started. My class are making great progress and I honestly feel I’ve done a great job in the classroom most lessons ( which is a feeling that doesn’t come easily to teacher!) I
Also i found out on Friday that when both myself and my daughter (a pupil) were off sick with the dreaded stomach bug on the last day of last term the head of school went round asking other members of staff if we had skived to get an early holiday as it seemed very unlikely to her that we could both have the stomach bug (she doesn’t have children!). Granted I have had some time off over the last year but my husband walked out on me with no warning just over a year ago, it completely floored me and I was off for two weeks. After that there were a couple (2 or 3 max) of times I had a day or or two off due to illness (I was a complete physical and mental wreck at this point in my life and got proper flu where I couldn’t even get out of bed twice) or my daughter’s illness ( single parent, no other childcare as my mum has dementia and my dad is dead) but no absence at all since about Feb this year.
She is generally acting very unprofessionally at work and the power has clearly gone to her head. Has refused to sign off stationary orders as she thinks we are all hiding stationary in our cupboards 
so we end up with no pencils or whiteboard pens for the children. Blames everything that people don’t like of the executive heads. Doesn’t do important paperwork ie sort out changes to support staff contracts so that they get paid the right amount. Lots of little things that just make work difficult.
I also found out on Friday that my TA is leaving - mostly because of her, she’s a great TA and has worked there for a long time. Despite loving every moment I. My class teaching I now desperately want to leave the school and potentially teacher as a whole as in my experience there will always be someone like her in a school. However I would struggle to find another job that would fit around responsibilities to my children and that I could earn a decent salary in but I am desperately unhappy there. All other aspects of my life are lovely now and it is the one thing dragging me down.
Should I go to the executive heads and share my concerns about her behaviour and how I feel I and a few others are being victimised by her? Does her behaviour seem as unreasonable to others as it feels to me? Congrats and a big glass of wine if you got this far.