Every year a different teacher would ask us about something from early 20th century, and we'd say we never learned that. Cause we hadn't. I had three different classes between middle and high school that kept covering the same historical periods (poorly) and the teachers mostly weren't really interested in it anyway.
I certainly can't imagine that institutionally things have gotten better. What I do envy now is kids who have the whole world at their fingertips, but I suspect the majority of them aren't being exposed to the learning and information potential available. They're just playing xbox and posting on myspace/facebook, like everyone else.