This is actually one thing I cannot be silent about. Book banning in high school libraries is bad Period.
This is glossing over the fact that the books that are getting banned from school libraries (some kids only access to books) are largely books about queer people, people of color, and social justice. Most importantly however these books are being challenged and banned by adults who DO NOT HAVE CHILDREN WHO ATTEND THESE SCHOOLS!
Anyone can go to a school district meeting and submit a challenge for any book they deem 'unfit for children' with no actual basis or any stake in the game. Conservative adults are deliberately trying to control what books people have access to entirely. It doesn't matter that it's 'just' in high schools with availability outside of schools, that's just step one. If they get footing on this to ban any content they deem offensive at schools that's just step one.
The argument of "Oh well these books shouldn't be in schools with Minors." falls flat because the 'pornography' that these people are fighting to ban is almost exclusively queer people simply being present in a book let alone sexually or romantically involved with anyone.
Any book with black characters gets challenged on basis of 'drug use' and 'gang violence' despite how little reference to either there may be even in an auto-biography. The books getting banned aren't just erotica and adult oriented stories, those are just cover for the real target, people of color and queer people. So before saying "They're just being banned in schools." Think about why anyone would want to ban a book in the first place.