The discrepancies speak. The more formidible matter is the need for education reform NATIONALLY. Tests are not fail safe and are not a consistent measure of student achievement. Over testing is even worse. Some students are poor test takers or are better at writing out their thought process rather than hyper bubbling within the multiple choice paradigm.
They can be compromised in many different ways. Having observed an electrical power outage during HSA testing- at a Montgomery County Public School, the concern becomes HOW ACCURATE IS THE DATA that is being collected?