And yes, students today are too often emotionally immature, but the push by parents, legislators and school boards are to move them into college at younger and young ages. Look duel enrollment. I listen to one board meeting where it was discussed about how they could make sure students got an AA before graduating from HS. Remember, pressures effect jobs, and what is pushed for will happen, no matter how ugly it really is. Passing students along was never an educators push. Parents began the push, and administrators and even politicians picked up on it.
As a country we've been working on this a long time. Politicians have been running every popular public effort imaginable, and yet with no results. While there would be better results if those in the field led the reform, the fact is the problems are large and the causes multiple. The more we try to make a simple solution, the further we get from the solutions.