Well, I don't know if it's always true that the bar gets set higher. For instance, Fur Elise used to be gr.6, and now it's gr.7. I think no matter what grade you are in today, it's equally difficult to get your ARCT.
In regular education, I sometimes think that we did some more useful things, like memorize speeches, and some dumber things like dissect mice and keep the skins, or answer values clarification-type questions without research.
We didn't run around as much like turkeys with our heads cut off, so maybe the education stuck better. Kids today seem to have no transition time between things.
When you read a lot of history, you cannot conclude that people are getting smarter. For sure, they are not getting wiser.