If fair dealing applies to an entire sector in society, I don't understand how you can think that will be easy to arrange. You are asking writers to provide the raw material used in education, and at the same time, you are saying to them that, if the educational institution can prove that it is dealing fairly, they will have to provide the fruits of their labour free of charge. A writer cannot possibly cope with that kind of situation. It's impossible.
On February 10th, 2011. See this statement in context.