Nicole Saginor is a former superintendent in Vermont, leading a school district through the School Improvement Grant process as directed by NCLB. She is the principal developer of the Vermont Classroom Observation Tool (VCOT), which was used by Mathematica Policy Research, Inc. in two national studies funded by the US Department of Education to measure teacher performance. In her book, Diagnostic Classroom Observation, she develops the VCOT further and gives vivid images of how good teaching actually looks in real classroom settings. With examples of how to create valid assessments, recognize