I used to love math. I loved Algebra and Geometry so Algebra 2 should have been a breeze, But the teacher I had was a witch. The only kids she was nice to were athletes and cheerlearders. I was very shy and she saw I had a problem wrong so she told me to go up to the board and do the problem for the rest of the class. Right at the start she began yelling at me and I panicked. I couldn't tell her my name if she asked. I just froze and the louder she got.
Stopped all math at that point. No calc, no trig...no dream of becoming an astronomer.
the next week, I was chewing gum and had to put it on my nose for the rest of the class. Hated that woman.
I will never for the life of me understand how or why some teachers come into the profession--or stay--and yet hate kids. But it seems for a few this is the case. Let me say for my profession I'm sorry that happened to you, there's no excuse for it and it did inexcusable damage, as we can see. Horrible.
Now here is where we come to the Conservative Conundrum:
I have taught for 25 years, in two states, three districts, and more schools than I care to list due to the nature of my job. What you list here are far, far from acceptable teaching methods, rest assured. Yet if you ask conservatives IN THEORY what's wrong with schools it's that they're "too soft" and there's "no discipline". Again it's always this completely dichotomous message:
I hated school as a kid but also
School should be just like it was when I was a kid
Teachers cannot coddle every student. My math teacher all throughout high school was a Nazi. The reality was that there was no escaping her if you were going to culminate in Calculus as she was the head of the department and taught the most advanced math classes at each grade level. Even other teachers did not like her. Other teachers complained endlessly that she flooded students with so much homework that it kept them from being able to do their homework in other classes. There were times we would have to use other classes classroom time to study for her exams. Other teachers finally just caved when students were doing it. Thing was, no matter how horrible a person she was, you sure as hell knew your math in the end. When I got to college, the math profs even knew of her for better or worse. She was rather infamous, including her reputation for hitting people with a ruler and throwing erasers at their head despite such things being strictly forbidden....except when she did it.
Your post is rather a mess. You have here an anecdote, which is mostly what I get. Define what you want. Do you want tough but fair? Do you want teachers rapping kids with rulers and throwing crap at their heads?
Don't tell me stories. Tell me what teachers in 2019 should DO.