Hey, Sideways Stories From Wayside School is great! And weird, but good weird. Twilight was the first thing I thought of when the COVID toilet paper crisis hit.

I loved those books as a kid! Probably my introduction to surrealism

What about a sentient bowl of petunias that is falling to its "death", again, and is the reincarnation of a rabbit, whale, fly, and cow? Or an android monk believing everything was the same shade of pink, making it too early to move from the spot it was on for fear of falling off a cliff, so it sat on the back of the (manufactured, organic) horse it was riding?

Yes, there can be multiple books that are weird or have weird stories. It doesn't have the be the weirdest one to still be weird.

Way to sideline things.

I read a book with a school whose students were all boys whose name started with the letter A. It was literally a requirement.

I don't remember much but I do seem to recall they had a field trip to a "hole factory" so they got to take various holes as souvenirs.

https://en.wikipedia.org/wiki/Akademia_pana_Kleksa_(novel)