They need to be able to organize and present curriculum, to give feedback to students, to assess growth, communicate with parents and participate in a professional community of educators. This is how they are accountable. They are not bound and determined to raise test scores. They are bound and determined to increase student learning, which is measured many different ways. Howard Gardner's work has shown there are many ways to learn and many ways to express understanding.
Standardized tests focus on logical-mathematical and linguistic intelligence only.
An accomplished teacher draws them out, and uses them all to access every child. But the standardized testing movement is leading to the narrowing of instruction, dumbing down our classroom, dumbing down what is expected of teachers. It does so not by rejecting the notion of standards. After all, central to the National Board process are a set of high standards for each specialty area. Rather, it says those standards need to be set and owned by the professionals who are to embody them, and they need to reflect the values, beliefs and aspirations of those professionals.