Poor rebuttal. Not only can teachers not choose their students, but teachers can rarely choose how they teach, as well.
The move toward standardization is not simply toward testing, but also toward scripted lessons, highly stringent time-tables, and an artificially imposed metric of "success" that leaves no room for innovating a solution. While standardized tests are performed disgustingly often in our schools, the results are so inconsistent and delivered so late that there is no opportunity for teachers to craft an effective intervention strategy.
"Most people that object to our current system of testing, have no interest in improving it, but rather prefer no accountability at all."
Unsupported, unadulterated, reactionary bullshit. Find a teacher and talk to them instead of pulling out rhetoric like this, please.