For the on-the-ground teacher, when you're speaking about access to copyrighted material, it has to be defined. If you're talking about textbooks and textbook material, that's provided by the employer. The individual teacher who is using resources in the classroom would be using material that would be in the form of articles, individual novels, and that sort of thing, which a school may produce.
On May 24th, 2018. See this statement in context.