It's a SCHOOL, an institution of KNOWLEDGE, if of all places they can't RTM, then we're all lost and the future is in peril.
Sorry, I can't agree with you at all as ignorance is never an excuse, especially when it's all spelled out in black and white, in a reasonably easy to access location where it makes sense to be found, such as Google's website resource pages for webmasters.
Your theft analogy doesn't play for me in this case as the tools to stop the indexing were readily available and simply not used. First off, it's not theft as Google is just a librarian. If you don't want your book to be in the library's index you simply don't sell a copy of your book to the library. In this instance, the library only indexes what's available and robots.txt, NOINDEX, NOARCHIVE, NOFOLLOW, etc. tell the librarians where to go and where not to go.
This is all WEB 101, this is not a secret, this is not a mystery, there are thousands if not hundreds of thousands of web pages devoted to these topics, not to mention hundreds of webmaster forums discussing it daily.
To be blunt, it's not hard for a 12 year old to figure out, so professional IT and educators that can't do this is shameful and again, ignorance is no excuse.