Actually, I have read "I Have a Dream". In school. In multiple classes, at multiple schools, in different parts of the U.S. We also watched the video of the speech in class.
Copyright law isn't preventing the material from being taught. Teachers don't actually care about such restrictions. They ignore them and teach it anyway.
Same here. I read it in school during Black History Month just about every year as a kid. I don't think teachers worry about getting sued by the King estate for photocopying the speech, any more than they worry about kids singing Happy Birthday in class.
> Teachers don't actually care about such restrictions.
No, but textbook publishers do. The current state of affairs means that very few textbooks include the speech, because textbooks are sold commercially.
Agreed, teachers are notorious for ignoring copyright (I've seen them photograph entire books for us in teaching), but that's a separate matter. IMHO, the solution to broken uses of copyright isn't to say, "let's just ignore it", even if that does have a desirable effect.
Copyright law isn't preventing the material from being taught. Teachers don't actually care about such restrictions. They ignore them and teach it anyway.