Inappropriate or Not? Mixed Signals From Schools

I was sitting in English class on Thursday, discussing the book we just finished (The God of Small Things) and a funny thing came up. There was a scene about incest in it, and my teacher stopped the discussion and mentioned that this book was actually banned at the early stages of it's being published, because of the inappropriate scene and message that it was explaining. This got me thinking about the reason that books get banned from schools or communities in general. I read a great article called "Banned Books: A School Librarian's Perspective" from Time Magazine. This is the link to the online article: http://www.time.com/time/nation/article/0,8599,55630,00.html

It was this librarian's responsibility to choose which books were not suitable to be in the school library because they were not appropriate for the school environment. The librarian says, "The hardest part of the job is to constantly keep in balance all viewpoints, not push my own agenda and remember that the education and safety of all of the students is my top priority." I never really thought about this. It would be hard to choose which books were allowed to be kept because of my own personal opinions about some books. If there was one about, let's say, "How to be a terrorist" then of course I would not allow this book but that is because terrorism hits close to home being a Jewish American who has visited Israel and seen the bombs in Syria. Yet, a different school, somewhere where terrorism was encouraged, would never ban this book because it was useful in the curriculum. All I'm saying is that I am against banning books, but if it had to be done I would have a hard time not keeping personal bias's out of the selection process. 

This ban of "inappropriate materials" can also be applied to other departments of a school including painting a nude portrait, or doing a provocative dance move during a dance show performance. 
Why can we read a book in school with a swear word in it, yet we cannot swear on our weekly broadcast of WDHS? I never understood this. For the rest of our lives we will be exposed to conflicting opinions, physical inappropriateness and overall immaturity of people in society. Why hide it from us if it is inevitable to be in our lives at some point? The percentage of people who these "banned" books would have affected is much smaller than the percentage who would have read it from school and not have had a second thought about it. I think this must be put into consideration when banning a book.