| http://www.w3.org/ns/prov#value | - There are policies he can not legally force on states, such as a common curriculum and rules about how they have to evaluate teachers. (He and Education Secretary Arne Duncan are insistent that scores on standardized tests have to be a "significant part of teacher evaluations; it is not bad policy to include them in some way, but there is a real lack of research to show that they are absolutely key t
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