I think stating that achievement test grade equivalents are of absolutely no value seems like a pretty broad and therefore erroneous generalization.
Surely some of the test GE numbers are more solid than others.
I am not sure I understand the conversation; I am not aware of a large contingent of people who would immediately equate GE=X results to meaning a child needed to be moved up to that specific grade. Nor would they anticipate their child being moved down if they score low.
Surely a difference of even a few years between a child's scored GE and actual grade will indicate a problem in academic fit. If ds was in 4th grade and score ge=2nd grade in reading I would be FREAKED.
What are we worried about here? Pushy people giving a bad name to folks who genuinely need a grade skip or two for their kids?