Left-Right Fringe Convergence Rears its Ugly Head Again

So, I was feeling cranky with Joanne Jacobs and Ken DeRosa for giving any attention at all the this utterly crackpot John Derbyshire rant on education, when I got to his fourth bullet point and nearly choked to death on my Diet Coke:

There is the homework racket, exposed in Alfie Kohn's book The Homework Myth--basically, a device for getting parents to do teachers' work for them.

That John Derbyshire is endorsing that Alfie Kohn? Do we need any more evidence of a frightening convergence of the crazy right and crazy left fringes on education?