Read The Graves of Academe online to understand how educationists in teachers college control the system and manipulate it to their own benefit.
In one course I learned the following:
Most of the students, and the professor, didn't believe in grades.
An overwhelming number were far left (and since I was a liberal then, we are talking about FAR left).
The education department was full of LIARS, because they said there were plenty of jobs (my mom was a dean at a private college at that time and I knew how hard it was to place even A student grads)
The professor was involved with an experimental, uncredited private school which had NO curriculum but taught this children things like playing poker and curse words (I am not making this up; he had slides and bragged about it)
After one semester of garbage like this I chose a geology major.
I second your suggestion to read Graves of Academe. I often have my ed. students read selected chapters.
These criticisms by Levine are little more than an effort to maintain and expand the influence of "educationism" into teacher prep. Prospective teachers need fewer credits in education courses and more in content courses. They also need help in becoming more literate, in gathering more knowledge and experience.