For proof that the current system is effectively broken, I offer the following from U.S. News and World Report, CAROLYN THOMPSON, Associated Press, Aug. 12, 2015 | 5:04 p.m. EDT:

About 20 percent of New York students refused to take spring assessment tests, officials say
BUFFALO, N.Y. (AP) — About 20 percent of New York’s third- through eighth-graders refused to take the statewide English and math tests given in the spring, the state’s education chief said, acknowledging the opt-outs affected assessment data released Wednesday, which otherwise showed a slight uptick in overall student achievement.

About 900,000 students sat for the Common Core-aligned tests in April, while 200,000 opted out as part of a protest movement against what’s seen in New York and other states as an overreliance on testing in measuring student and teacher performance.

About 5 percent of students opted out of last year’s tests.

The rest of this article can be found at http://www.usnews.com/news/us/articles/2015/08/12/about-20-percent-of-ny-students-refused-to-take-spring-tests.

Incidentally, when one in five students refuse to take a test, that “acknowledgement” by the state’s education chief that assessement data was “affected” is disingenuous, especially when followed by any assertion that student achievement shows improvement. With that many missing numbers in the equation, it’s entirely possible that state student achievement went down, not up. New York school officials are hiding the truth when they say anything else.