Also, the trivium is a related subject which is how to educate to produce logical critical thinkers. There is some information on this site:
Also, this 15hr podcast set by some folks who interviewed John Taylor Gatto and it covers the length of history that gives you the big picture in which the dumbing down of education is a part. It can answer the questions, who, what, where, when, why and how, which leads to real understanding, and you set you on your own path of learning.
Very worth listening to!