I read stuff like that from the time I was 10 or 11 because it was in my house. In sixth grade I got a letter from my mother letting me take out anything I wanted from the library.
In hindsight, it wasn’t appropriate and I set stricter limits for my own children. However, the only reading that actually did me harm was the occult which was mild stuff in terms of sex and violence.
What I object to in the present school curriculum is not the individual book like The Bluest Eye. It’s the endless parade of death education starting in fourth or fifth grade, the holocaust, racism, mental illness, abuse, war, drug use, bullying, dystopianism, despair. Nothing good ever happens in the public school canon.
I was pretty much allowed to read what I wanted myself.
In high school, I carried copies of James Burke’s books “ Connections” and “The Day The Universe Changed” to annoy the dingbat history teacher.
If I had really known Ayn Rand and her works (I like a lot but not all her ideas), I would have brought then too. Both comrade economics and comrade government indoctrinators would have lost their minds.