Art and The Test

From the
a story about standardized testing and the arts. In the article one paragraph caught my eye,
"From the while both the Department of Education and the federal government identify the arts as vital to a good education, the grades -- and the standardized testing approach -- fail to acknowledge the central role subjects beyond reading and math play in a child's education. Arts education may very well be the "incomplete" in these report cards."
In Florida the State Art Education is in the process of developing a standardized test for the visual arts.
Now is this a good use of our time? I'm sure that politically it is a good idea. A test will add legitimacy to the arts in the eyes of the ones that hold the purse strings. But will the students learn because of it? Yes, in the areas that are tested, but with 100 or so questions how large an area of art could that be? (Wow that sounds like what is said about the other test)
Unless the art test is perceived as only a part of assessing what a child has learned in art. In visiting other art teachers and their classes each class is as different as the style of art that each teacher prefers to work in. How can that variety be assessed in a single standardized test?