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The 2006 equating solution was affected by location changes of the anchor questions
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Some change in question location is expected
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In 2006, a large number of questions changed locations
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12/21 anchor questions moved more than 15 item positions (0 in 2004 and 2005, and 2 in 2007)
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The result was better performance
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However, no outliers were identified via calibration
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Goal is to find a “better” or “best” equating solution
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“Better” must be defined
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Process considerations
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Selection of anchor questions
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Follow the guidelines
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Evaluate the quality of the anchor questions
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