Reply to 5th graders taking 6th grade map m

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[quote=Anonymous]I think a lot of you are making a big deal out of nothing.  The percentiles for the Map 2-5 and 6+ are based on the RIT score.  The RIT is supposed to show growth, the tests have overlap, one just goes lower and the other extends higher.

Here is how NWEA defines the RIT score:

What are the characteristics of the RIT scales?

These RIT scales are stable, equal interval scales that use individual item difficulty values to measure student achievement independent of grade level (that is, across grades). "Equal interval" means that the difference between scores is the same regardless of whether a student is at the top, bottom, or middle of the RIT scale. "Stable" means that the scores on the same scale from different students, or from the same students at different times, can be directly compared, even though different sets of test items are administered. A RIT score also has the same meaning regardless of the grade or age of the student.

In summary, the RIT scale is:
An achievement scale
Accurate
Equal interval
Useful for measuring growth over time
The same regardless of the grade or age of the student

source:  https://connection.nwea.org/s/article/What-is-the-RIT-scale?language=en_US#:~:text=A%20RIT%20score%20measures%20a,calibrated%20at%20that%20RIT%20level.

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