RIT Scores

RIT stands for Rasch Unit, which is a unit of measure that uses individual item difficulty values to estimate student achievement.  RIT scores create an equal interval scale.  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 RUT scale, and it has the same meaning regardless of grade level.

Each students achievement is unique and no single test can yield a complete profile of a students overall achievement. RIT scores are very accurate estimates of where in the Learning Continuum they are at the time of testing. Students can correctly answer about 50% of the question in their RIT range. One RIT range lower, students can correctly answer about 80% of the questions. One RIT range higher they can answer about 20% of the questions correctly


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