The point is that while most of the book is incredibly boring, that's a feature and not a bug.
It wasn't until a decade after college that I picked up another Steinbeck novel. and after finishing Cannery Row, the only question i could ask myself was, WTF were my teachers thinking assigning Grapes of Wrath vs some of his much shorter, less complex works that could be read in a couple days. The whole book is shorter than the section of Grapes that most people describe as being the slog you have to get through to enjoy the rest of the novel.
I read a lot, and I can say with a fair bit of confidence the one long lasting result of assigning these books in HS is to guarantee most people have a life long repulsion for long "classics".
I've called it "an overdose of Dead Poet's Society" before. Shakespeare plays, Steinbeck, Moby-Dick: they'll all make the majority of the class tune out if they're presented as a treatise on the human condition. Shakespeare is meant to be performed on a stage, not read from a book. Discuss his codification of character archetypes and plot tropes, perhaps even some wordplay choices. At 16 years old, "a treatise on the human condition" is pretentious puffery. Even those teacher's pets who take it seriously are merely LARPing as well-rounded individuals.
My dislike of how Shakespeare was taught in HS is from a different angle. The problem wasn't that the stories were unrelatable: that was during the peak of my fantasy-reading years. I disliked how much focus was put on the iambic pentameter as some special sauce for "understanding what it means to be human" and other overdoses of the Dead Poet Society ethos.
I love classics and every time I read one there's a moment when I think to myself "I'm so glad no one is going to make me write an essay on this." I don't have to try to pull out the major themes, I don't have to discuss about the character's motivations, I don't have to consider the novel in the context of what was going on in the writer's life time. I can just let it wash over me, I can just enjoy it.
It's a miserable and joy-killing way to approach reading. Even as I look back to the books I read in High School I don't think any every became my favorites. The Great Gatsby is a fine book but when I look back on it I remember all the sections where we had to point out 'symbolism'. What a drag.
“To enjoy bodily warmth, some small part of you must be cold, for there is no quality in this world that is not what it is merely by contrast. Nothing exists in itself. If you flatter yourself that you are all over comfortable, and have been so a long time, then you cannot be said to be comfortable any more. For this reason a sleeping apartment should never be furnished with a fire, which is one of the luxurious discomforts of the rich. For the height of this sort of deliciousness is to have nothing but the blanket between you and your snugness and the cold of the outer air. Then there you lie like the one warm spark in the heart of an arctic crystal.”
― Herman Melville, Moby-Dick or, the Whale
Holystone the decks!