What is a RIT Scale Score?
What is a RIT Scale Score?
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NWEA’s RIT scale stands for Rasch UnIT scale. There are several RIT scales: one each for reading, language usage, mathematics, and science. RIT scales are stable, equal interval scales that use individual item difficulty values to measure student achievement and has the same meaning regardless of the grade or age of the student.
NWEA’s RIT scale stands for Rasch UnIT scale. There are several RIT scales: one each for reading, language usage, mathematics, and science. RIT scales are stable, equal interval scales that use individual item difficulty values to measure student achievement and has the same meaning regardless of the grade or age of the student.
Stated briefly, the RIT scale is:
Stated briefly, 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
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