It may come down to semantics; however, such an important and intrusive project should not be presented in an ambiguous manner. Do you see how the second line in the excerpt can be read in multiple ways? The problem is an apparent lack of care in putting together this project. Why trust the quality of a project that - on its face - shows imprecision?
Nancy Joanne Vinicor
These graphs show a teacher's "value-added" rating based on his or her students' progress on the California Standards Tests in math and English. The Times’ analysis used all valid student scores available for this teacher from the 2002-03 through 2008-09 academic years. The value-added scores reflect a teacher's effectiveness at raising standardized test scores and, as such, capture only one aspect of a teacher's work.
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http://projects.latimes.com/value-added/teacher/nancy-joanne-vinicor)
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