Value-added Modeling

Value-added modeling (also known as value-added analysis and value-added assessment) is a method of teacher evaluation that measures the teacher's contribution in a given year by comparing current school year test scores of their students to the scores of those same students in the previous school year, as well as to the scores of other students in the same grade. In this manner, value-added modeling seeks to isolate the contribution that each teacher makes in a given year, which can be compared to the performance measures of other teachers. Critics say that the use of tests to evaluate individual teachers has not been scientifically validated, and much of the results are due to chance or conditions beyond the teacher's control, such as outside tutoring.

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