I get exactly what your saying tellmesomethingtrue, people or parents just don't know what it's like to stand in front of 30 secondary school children who decide they are not going to engage or cooperate in the lesson, either egged on or egging on other students to join in.
I was a Cover Supervisor for 13yrs, taking classes from yr7 to 11 and supervising years 12 and 13 just to make sure they worked if the teacher wasn't there. I as more and more children refused to follow instructions, listen and were very entitled, both the children and their parents had loads to say about any detentions that were set.
Before this, I loved my job. There were about 6 Cover Supervisors and although we covered all subjects we were able to say what lessons we were more proficient in or enjoyed, so you knew more about what you were talking about. Mine was History, Geography and English but as I say I did cover other classes too, such as maths, science and technology etc. The teacher would email what the students had been working on, what they wanted you to cover and would later see the work that had been produced by looking through their books and how well the student had understood the lesson.
With the lower classes it is teaching in some ways, talking them through the work, reading from the texts books, gaining the information, writing examples on the board, helping them navigate through the work and sharing as a class at the end. When you work in a school for a long time, you get to know the syllabus.
I so enjoyed my job, I was more popular with some students than others, but it wasn't a popularity contest. I was there to cover the class teacher and the children were there to learn. I had the right to remove them from class if they misbehaved, give out detentions and contact parents regarding their behaviour.
At the end it was the yr 8 girls that finally broke me. In the past I had broken up fights of 15yr old boys, calmed down children from throwing furniture around the class in a rage. And was a respected member of the staff. But the class of yr 8 girls took no notice, they ridiculed me, they told me they would tell their parents to get me sacked, their parents refused to allow them to attend any detention I set as they believed the students version of any event that had taken place. And when I rang the parents to talk about their childs behaviour, they either couldn't have cared less or simply said, they don't act like that so it must be you.
I was 56 by then and decided it was time to leave. Never underestimate what it's like to be in a job where a class of 30 children take no notice of you or behave so badly that like tellmesomethingtrue you just walk out of the class.
SLT was involved, I was supported. The school and myself did all the right things, but the attitude of some students and a lot of parents changed my outlook on my job and I left. I do miss it but it did start to affect my mental health and I lost my confidence.