why is this consistent rule

Serious response: Studies have proven again and again that reading fiction increases empathy. Many English teachers probably chose their jobs because they had a love for literature in the first place and their exposure to it has had its effect on them. [In that regard the absolute worst people on this planet are well aware of this effect and attack libraries, books with diverse viewpoints and the humanities whenever they get a chance to.]
- That makes the one shitty English teacher I had stand out even more in my mind. She wasn’t quite Roald Dahl character level shithead, but she was close. I’m pretty sure her being ex-military had a lot to do with it.
- Conversely, it's hard to care about literature when you don't have empathy. Especially "serious" literature, as opposed to sci-fi or fantasy that seems to be easier to connect with for rightwingers (though it may often require reading a dystopian work as inspirational instead of as a warning). I read that many of the important people in silicon valley are into sci-fi ...
  
  Conversely, it's hard to care about literature when you don't have empathy.
  Of course, the question remains how much people with low empathy are willing to pick up a book on their own volition. Though at least studies have shown (here is one) that reading fiction increased empathy even when people were not particularly empathic to begin with.
- The teachers also have a duty to care for the children under their care, aside from being more caring, they also are told to be more caring

Don't forget your theater directors.
There's a reason it's a stereotype. Theater is a great place to find yourself, you're given the chance to be anybody.
- Really wish i had become a theater kid. Alas, crippling anxiety.
  
  I mean this, it's never too late. Even if you're not comfortable getting up on stage, trust me, there's something you can do for the crew. Even if it's just being extra hands to carry props, there's never enough people.
  Keep your eyes out on any local theater groups. It can be easy to get involved! Sometimes even paid!
  
  Oooh I still have that. But it's better than it would have been.
  
  I feel like theatre taught me how to be on stage. I don't think you're wrong, just that is like you and I had the same feeling but jumped opposite ways
- Theatre changed my life. Mr K I love you

I suspect English teachers - specifically English Literature (if that's a thing elsewhere, certainly was in England and Wales) - probably have read lived experiences and accounts of what has happened to marginalised people in the past. Being able to critically evaluate texts forces you to see different views of things - the ideal way to foster understanding of other positions even if you don't agree with them.
Purely speculative post based on anecdotal evidence, but good on them.

Can confirm, my High School Creative Writing and English Teachers were my favorite ❤️‍

cannot confirm

Band teacher for me, and I didn’t know it yet, but yeah, I’m in this photo lol. Actually I’d say I’m in it twice, because now I foster a space for queer youth to feel welcome and comfortable.