There was one high school teacher I never liked.
She was a friend of my parents, but I always felt that she hated me. So I hated her.
I survived her class and vowed I would never speak to her again.
Then (remember she was a friend of the parents) she was invited to my wedding - and then various family functions over the years. I avoided alumni functions from high school, but my parents would invite her.
This past week I was home for another family function. And I took time to actually talk to this teacher as an adult to an adult. And I found that a lot of the opinions I have about teaching are opinions we share. And the hate is gone.