Jason Stanford is a journalist in Austin, Texas, who follows the testing wars with keen interest, probably because he has children in school.

Having followed the blowback in Texas, where parents and educators together convinced the legislature that their zeal for testing was unreasonable, Stanford decided that standardized testing is not a good way to hold schools accountable. Actually, he says it is a lousy way because the tests don’t measure what we think they measure.

He writes:

“We’ve been using bubble tests to hold schools and students accountable for a long time, mostly without anyone asking tough questions about whether the scores were valid measures. Controversy over student testing was slow to develop and then mostly concerned the number of tests and the harsh consequences. We never asked whether the thermometer really measured the temperature, even though our education system is based upon the validity of these tests.”

He refers to “value-added measurement” as junk science. It is easy to parody as “Orwell-Meets-Kafka,” especially when the government does absurd things like ranking teachers by the scores of children they never taught.

This was the key point for him: “What really seemed to shake things up was an April report by the American Statistical Association, which said that because VAMs were based only on standardized tests they were 10 pounds of hooey in a 5-pound bag. And if you’re inclined to want the details, here’s the phrase that pays: “Most VAM studies find that teachers account for about 1 to 14 percent of the variability in test scores.”

And that led him to ask: “If teachers only account for 1 to 14 percent of the change in test scores, then what does the other 86 percent measure?”

“And if we don’t know what it means, why are we holding schools, students, and teachers accountable to it?”