Here's a very good summary of the literature on homework from Slate:
http://www.slate.com/id/2149593/
Forget Homework
It's a waste of time for elementary-school students.
By Emily BazelonPosted Thursday, Sept. 14, 2006, at 7:47 AM ET
I'm with OP. There is zero evidence that homework for young children has any benefits, and some non-trivial evidence that it is counter-productive (e.g., just breeds resistance to school). I HATE the stupid homework my 1st and 3rd grader come home with. A lot of it truly is homework for the parents -- which, as a single, working mother, I resent.
The worst of it is when filling in idiot worksheets actually cuts into time for somewhat more valuable activities... such as cuddling, talking and reading together. (And can i say how annoying it is to receive homework assignments that contain glaring grammatical errors in them? I'd say that's a weekly occurrence).
I have raised this issue with the teachers and administrators at my children's expensive and "progressive" private school. The Head more or less told me that they know the homework is pointless, but they're afraid to stop assigning it since so many parents foolishly equate quantity of homework with academic quality.
I didn't get any homework as a child until 5th or 6th grade... and rarely more than half an hour or so of work, a couple days a week. And the the plural of anecdote is not date, I grew up and went to Harvard and did just fine despite my tragic homework-free childhood. (Come to think of it, I didn't have music lessons, language lessons, sports lessons, Sunday school classes, gymnastics lessons, ballet lessons, or any other outside-of-school lessons either. After school and on weekends, we just... played. What a concept!)
At Janney ES circa 2005-2007, we would get school wide letters from the principal that had so many grammatical errors that I wondered if he ever proof read ANYTHING he ever wrote. At first. Then I came to realize that proof reading doesn't help if you never learned the actual structure of the english language. The ignorance was systemic with some of the teachers in the early years there. I then decided that in the pre-k, k, 1st and 2nd, I would sort out what was meaningful in the homework and just discard the rest. As a child, I had no homework until 5th grade. I learned to love to read. Graduated in the top quarter of a good prep school went on to a top college and law school. School, of course, was hard work. I'm no "slacker" but we were given time to develop a "love of learning". I'm just trying to tailor something like what I had for my kids.