Normative Data and RIT Scores

The most accurate norms

Today’s kids are vastly different than those in school ten years ago, so NWEA™ conducts norming studies frequently—three to five years—ensuring that the comparisons reflect current standards and demographics. And we continually refine our best-in-class research model to make NWEA norms more accurate than any other—and always improving.


Norms help teachers teach and leaders lead

Norms help you see if students are growing at an expected pace, regardless of where a student started. NWEA norms allow you to make predictions about what kind of growth is typical and atypical.

A line graph which presents the RIT scores of a student spanning multiple grade levels in a range of normative percentiles.

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  • Student-level achievement norms

    Help you see your students’ percentile rankings in a nationally representative student population.

  • Student-level growth norms

    Allow you to compare your students’ growth with that of their academic peers.

  • How long is a MAP Growth test?

    Tests are not timed, and students may take as much time as they need to complete them (this eliminates some of the pressure and anxiety students may feel about taking tests). Most students take less than an hour to complete a MAP Growth test. MAP Growth K-2 tests are typically shorter.

  • School-level norms

    Provide a context for comparing grade level achievement and growth in a single school relative to other schools across the nation. MAP Growth is the only interim assessment that provides school-level norms, helping you compare specific grade levels in your schools to students in the same grade across the nation.

Unlock a world of potential with RIT

MAP® Growth™ measures student performance with our RIT scale—the most stable, mature scale in the industry. Like centimeters on a ruler, it measures in equal intervals, regardless of a student’s grade or performance—and it remains stable over time. This gives you an accurate measure of student performance, regardless of whether they’re performing on, above, or below grade level.