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Dylan Wiliam discusses teacher quality and the fact that every teacher can improve. Creating a culture of continuous improvement in schools helps all teachers get better at what they do.
Additional Resources:
Information on Fusion
http://fusion.nwea.org/
NWEA website
http://www.nwea.org/
About Dylan Wiliam
http://keepinglearningontrack.nwea.org/dylan-wiliam.html