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This chart plots the mean score of students (blue dots) and their teachers (black triangles) to sets of questions in the science categories labeled, and grouped by Grade. 1.00 means all correct answers, and 0.00 means all wrong answers. Red circles are the teachers estimate of how their students would do - they are uniformly too optimistic. A score of .8 was defined as signaling "proficiency" - no student groups were found to be proficient in any subject; in a few cases even teachers were not proficient.
Credit: P. Sadler, et al, 2010
Low Resolution Image (jpg)
Credit: P. Sadler, et al, 2010
Low Resolution Image (jpg)
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