I can get behind this b/c I have been against standardized tests for a long time. I firmly believe that a child's life outside of school directly affects his ability in school. My wife is a teacher and NYS has been trying to pin overall teacher evals on standardized testing. I am not anti-eval, but just looking at the cultural and economical variety of my wife's class, you can tell that a single test cannot accurately gauge a child's learning or a teacher's effectiveness.
I am fortunate that I can give my children paid for extra help in many areas of education. I also have the flexibility to be home and help my children with homework and assignments, as do prob most here. My wife is a teacher and has a pretty choice schedule and is home when the kids are. however, if you look at my wife's class, few of them have families that are in that type of situation...she has kids who's parents are incarcerated, single parents, parents who cant hold a teacher meeting b/c they work 2 jobs, and many with no English speaking support at home. These kids no matter how hard they work will generally have a disadvantage to my kids, just like my kids will have a disadvantage to those in much more wealthy families where they can get private tutors and such.
I have a client who runs an SAT test prep business that is pretty expensive. I doubt many families in my wife's class could hire them. You cannot give every kid the same test and expect every kid to excel at it.