Poetics aside, I have to agree with you about how the poem is a very sad story. My explorations in free verse elsewhere in the thread may be a way to cover up my tears.
My daughter is very bright, but when she was in grade school she'd sometimes have trouble with a homework problem because the textbook didn't explain a concept clearly.
So I'd tell her how I've always found it helpful to read multiple sources on a topic. If one of them doesn't click with the way I think, another one probably will. And just reading multiple references that explain things differently helps reinforce the concepts.
She wanted nothing to do with it! She only wanted to hear about the way "they" explained it - the textbook, the teacher, the school - the right way to do it. Nothing else.
I guess I wish she'd gotten a teacher like the one at the end of that story, early on.