I will go ahead and admit that I am just beginning my graduate studies in education so I am not the grand master instructivist believes him/herself to be, but let me see if I can express my self more professionally than he/she did. I realize that this is a very old post, but one statement irks me to the point that I must make this probably futile reply:
"Alfie has has given us a false premise. Homework is not responsible for stress etc. It is the student's inability to do homework, no doubt because they weren't properly taught the underlying subject matter, which leads to frustration and stress."
This is so totally false that words fail me. Homework doesn't have to be impossible to create stress. If the assignments are ridiculously easy, but ridiculously long (try unending and unnecessary) as they always were in my personal experience with primary school, then I can only view them as Mr. Kohn believes them to be: a conspiracy to desensitize students to the drudgery of spending the rest of their lives in a cubicle. I'm not certain as to the validity of Kohn's data or arguments, but I am sure about yours. And as far as your statement that there is no good data pertaining to this matter, try googling Dr. Harris Cooper. Or if you like, e-mail me and I'll send you a 60 page PDF.
You sir/madam are the jackass.
Sounds like he's been sniffing too much glue making all those ed school collages.