Some say the current generation is the dumbest to inhabit America in sometime, would you agree?

Is it the below average education system, "hip hop" dominant influences, materialistic pop media culture, the degradation of family structure, or more so a combination of all such things? In your mind, what is main contributor to the lack of development we are seeing throughout America's youth? It would seem character traits such as intelligence and hard work have been replaced with self entitlement and narcissism. I call it the "look at me" generation, and it is the one I call my own.