At secondary school [a UK institution] a book of "Modern poetry" was handed out to the class which was found, to our surprise, to contain the entire lyric of "Penny Lane".
What made this song poetry, according to our tutor, were the three words at the close of this verse:
Behind the shelter in the middle of the roundabout
The pretty nurse is selling popies from a tray
And though she feels as though she's in a play
She is anyway.
"Lennon is suggesting that all this" - pointing around the classroom - "maybe a dream of some kind, or somebody else's dream..." I wasn't convinced that this qualifies PL as "poetry" at the time, but now I think why not, it certainly caught the classes' collective imagination more than any other piece in the book...
PS Forgot this...then the tutor opened his book and found the relevant page torn out of his copy! "Somebody thought Penny Lane was worth stealing..."