More than half of kids didn't even finish high school in the 30's.
What we're really seeing is how technology is allowing teens (and adults, too) to express who they really "are" - from a psych standpoint - without the filter of civilization. Teens are almost solely focused on themselves. It's a biological thing that simply cannot be changed (although with the right "coaching" the maturation process can be accelerated).
It's a process to grow up and grow beyond being so self-focused and seeing oneself as part of a greater whole. Some folks (some very powerful folks) never get beyond being hyper-focused on themselves and their self image. They get stuck in their ego and never grow into their superego (see
Freud for a description of these).
The question is what kind of people are we creating with ubiquitous technology that stunts this maturation process?