OK, memories, I’ve experienced this.
I was probably in second or third grade, somewhere around there. The town library was across the street from the elementary school I attended, and rather than walking straight home, I’d often sidle into the library and devour books for an hour or three. Unfortunately, the library had this policy that weird little kids like me had our own specific section of the library, and we were not allowed in the adult section. But I’d already read all the biology books in the kids’ section, and most of them were descriptive and phenomenological picture books, and I wanted to know why, not more what. So I snuck into the adult section one day.
And a librarian caught me. She said I had to have an adults’ permission to be back there with the real science books.
That made me mad. I think eventually I got Mom or Dad to tell them I was allowed to read anything in the main library, and that allowed me to consume everything.
I’m pretty sure that the Kent Public Library changed their policy a few years later, because in high school I noticed that they allowed all kinds of short riff-raff to run free everywhere. Good for them.