Thanks kcab and I'll incorporate those suggestions. I definitely want it to go to someone who understands statistics.
In NWEA's Parent Toolkit, it says
we are unable to discuss any student information, test results, or district assessment programs directly with parents.
and
Because each district's implementation is unique, parents will need to direct specific questions and concerns to their local school district resources.
That supports your point that NWEA may have limited ability to change the situation. Since they put out the bad data in the first place, I want to emphasize their responsibility to try and correct it.
So your post helps me summarize the problem as: Invalid data is being disseminated by school officials to teachers and parents. It is also being disseminated on the web.
