Interesting article, George.
Williams is right that many of those who major in education and become teachers are at the bottom of the academic barrel. There are also some teachers who are near the top academically, and put up with all the B.S. because they love to teach.
Of my high school graduating class, the valedictorian and the student with the highest SAT score (2 different people) are both currently teachers. This was a rather small high school, and from the same class also came chemical, electrical and nuclear engineers, accountants, and at least one doctor and one dentist, so it wasn't exactly a class of slackers.
Williams is correct, as usual, that there are factors other than the quality of teachers affecting the quality of education - those include the quality of students, political factors, and administrative factors.
Prospective teachers should be held to a higher academic standard, but I'm not sure if that's going to happen until working conditions and salaries improve. Kind of a chicken-and-egg sort of thing: if they raised standards, I'm not sure they'd be able to get enough teachers to fill classrooms at this point.
She also submarined the Calvert Curriculum that worked VERY WELL in 2 "disadvantaged" Baltimore City Elementary schools. Children AVERAGED 32 POINTS above the national average on standardized tests out of California, But, according to Grasmick, "That's not right, and must be changed." One wag in Baltimore said, "We can't be teaching this 'elite' curriculum to OUR kids."
So, with the obvious intelligence running the school systems, is coordinated stupidity at such levels of intelligence possible, or, is what's happening in so called education today just plain planned ordinary EVIL??? Peace and love, George.