Are the same RIT scores for different grades comparable?

Document created by Community User on Oct 31, 2017
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If a first-grade student who took a MAP Growth K-2 test has the same RIT score as a seventh-grade student who took a MAP Growth 6+ test, are their scores comparable? Are both students working at the same level?

Yes, in the same subject (such as math). The RIT scale is a scale of item difficulty. Therefore, a first-grader and a seventh-grader with the same RIT score in the same subject are both answering items of the same level of difficulty.

However, the item content seen by the first-grader will be different from the item content seen by the seventh-grader because the content that is included in the MAP Growth K-2 test is different from the content included in the MAP Growth 6+ test. The math content included in the K-2 test (e.g., basic concepts of arithmetic) is much more basic than the content included in the 6+ math test (e.g., probability and statistics, algebra). The first-grader with the high score is probably responding correctly to very difficult items of basic arithmetic, but we would not be able to infer anything about their achievement in the content areas not tested by the K-2 test, such as statistics and algebra.

In general, a student should receive a version of the MAP Growth test that is consistent with the content in which they are being instructed. Therefore, if the high-performing first-grader has adequate reading fluency to complete the 2-5 test, and is receiving instruction in advanced content, it might be recommended for them to take the more advanced math 2-5 test.

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