Intermediate Network Tools

Intermediate network tools are the only type of censorship I have ever knowingly faced on the internet. In school we were never allowed to view sites that contained content that was against the student code of conduct. Sites that could potentially have quality information such as YouTube , Twitter, Wikipedia, some web hosting websites and blogging websites were impossible to access. I understand the school board's decision to block some forms of content on the internet because they do not want to expose themselves to any trouble with parents. Some parents do the same at home and do not want their children exposed to of violence, nudity, racism, harassment, etc. These intermediate networks allow users to post anything they want no matter the quality of writing or idea but there is some intelligent material. There are some websites such as Facebook, Myspace and other social networking sites that I understand being blocked because of time wasting. These are the websites that schools should block completely. They could look into the possibility of specific page/genre blocking instead of entire websites. I understand that censorship is a concern for parents but the level of censorship differs between parents and kids will always find a way in the end.