The Los Angles Times published an article describing the practice of applying value-added data for the evaluation and comparison of teacher performance. The article
"How the teachers were evaluated", (Source: LA Times, August 15, 2010), described the statistical method of estimating teacher effectiveness using student test scores. Student's prior test scores are used to project future performance. The rate of change between the student's test scores compared to the projected results determines the value added from the teacher.
The below graphs were published in the LA times to illustrate the value added practice.
Student 1 - Results exceed expectations
Student 2 - Results fall short of expectations
The practice uses value-added based upon student growth to determine teacher impact.
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