We did not have televisions in class, but there was one large old black-and-white set that was kept on a rolling cart in a grim, dark room called the "science room" and could be brought elsewhere for special occasions. I remember that this room still had special blackout curtains, probably from WW2. I don't recall just how it happened, being 50 years ago now, but I was allowed to see the speech there. I think I mentioned in another post that as kids, we were as intent upon the fact that the podium caught fire as we were upon the speech.
Also in the same room I later watched Robert McNamara receiving an honorary degree. I don't know why I remember it, or why that was important enough for us to see.