There was a post a while back on the Core Knowledge blog about this. You should check out the comments over at Kitchen Table Math's post - not a blog that's usually on my reading list, but they are certainly engaged on this issue...
A seattle PI report on the case: article Home page for the series from Key Curriculum Press. Includes sample chapters.The weird thing is that it's really a middle of the road series. Usual stuff plus some investigations students can do. Not as different as Core Plus or IMP (both of which I like a lot).
I know, I like using the Discovery series to supplement the books the district has - and taught my daughter Algebra with them.
I read Director Harium's blog, though I don't participate. Here is a "math adoption thread" he started four months ago.I think he is on the Board of Education there. You get a sense of the tone. Also, there are archives, going back far enough to be interesting.Jonathan
You may also be interested in this post about text-book battles in Spokane.
Thanks for all the links, folks. I guess I have my homework cut out for me now. ;^)
One last link - a school board adopting the 'controversial curriculum.'