I'd like to add you can't educate those who don't want it. So, before dumping billions into education, make sure there's someone to educate.
Quite simply, everyone isn't college material. Some aren't high school material. ****, some aren't grade school material. They have no interest in sitting in a classroom while Mr. History drones on about 1776. What do you do with them? Because, quite frankly, they're going to be disruptive to the learning process. And, as you move along the education ladder, there are more of them. What do you do with them?