My school and classrooms were too. But then, around 1968, something went terribly wrong.
Or wonderfully right, depending on one's point of view. The "Leave It to Beaver" times were not as good as nostalgia would love to make it. Much better now. IMO, of course, and always plenty of room for improvement.
At least with LF landscape, a bad day of photography can still be a good day of exercise.