A Below Basic Understanding Of Proficiency
Given our extreme reliance on test scores as measures of educational success and failure, I'm sorry I have to make this point: proficiency rates are not test scores, and changes in proficiency rates do not necessarily tell us much about changes in test scores.
Yet, for example, in the Washington Post editorial about the latest test results from the District of Columbia Public Schools, at no fewer than seven different points (in a 450 word piece) do they refer to proficiency rates (and changes in these rates) as "scores." This is only one example of many.
So, what's the problem?