This is why parents should use current MAP percentile charts rather than relying on a general percentile table without checking the grade and testing season.

What Is an Achievement Percentile?

An achievement percentile describes a student’s current performance compared with students in the same grade nationally.

For example, a student at the 50th percentile performed around the middle of the national comparison group. A student at the 90th percentile performed as well as or better than approximately 90 percent of comparable students.

Achievement percentiles can help parents understand where a student currently stands, but they should not be treated as a complete measure of academic ability.

A student’s classroom performance, teacher feedback, assignments, and other assessments can provide additional information.

What Is a MAP Growth Percentile?

A growth percentile measures how much a student has progressed compared with students who had similar starting scores.

This is different from an achievement percentile. Achievement describes current performance, while growth describes progress over time.

For example, a student may have an achievement percentile below the national average but demonstrate strong academic growth. Another student may have a high achievement percentile but show more moderate growth.

Parents should look at both achievement and growth to understand the complete MAP Growth picture.

What Does a High MAP Percentile Mean?

A high MAP percentile generally means that a student performed higher than a large portion of students in the national comparison group.

For example, a percentile rank of 85 means the student performed as well as or better than approximately 85 percent of comparable students.

However, a high percentile does not mean that a student has mastered every skill in a subject. MAP Growth measures achievement through an adaptive assessment, and the results should be considered alongside other academic information.

What Does a Low MAP Percentile Mean?

A lower percentile means that the student’s current achievement is below a larger portion of the national comparison group.

It does not automatically mean that a student is failing or unable to succeed academically. Students have different learning experiences, educational backgrounds, and rates of progress.

Parents should review the RIT score, growth percentile, previous MAP results, and teacher feedback before drawing conclusions from a lower percentile.

How MAP Percentiles Work in Math and Reading

MAP percentile scores can be reported for different subjects, including mathematics and reading.

A math percentile shows how a student’s mathematics achievement compares with students in the same grade. A reading percentile provides similar information about reading achievement.

Parents should always make sure they are using the correct subject and grade when reviewing a percentile chart.

The same RIT score can have a different percentile depending on the subject, grade, and testing season.

Why Grade Level Matters

Grade level is an important part of interpreting a MAP percentile.

NWEA uses appropriate comparison groups for different grades, so parents should compare a student’s result with students in the same grade.

A percentile from one grade should not automatically be compared with a percentile from another grade without considering the appropriate assessment data.

Using a grade-specific MAP score chart makes it easier to understand whether a student’s performance is near, above, or below the national reference points.

Why Fall, Winter, and Spring Matter

MAP Growth assessments may be taken during Fall, Winter, and Spring testing periods.

Each testing season has different national comparison information. A student’s Fall percentile should therefore be interpreted using Fall reference data, while Winter and Spring results should be compared with their respective seasonal norms.

Looking at results from multiple testing periods can also help parents understand how a student’s performance changes throughout the school year.

What Changed in the 2025 MAP Norms?

The RIT scale itself has not changed, but the national reference points have. NWEA reports that the 2025 norms generally reflect lower national achievement than the previous 2020 norms, with larger differences among lower-performing students.

As a result, the same RIT score may now correspond to a somewhat different percentile than it did under the older norms.

This is why families should use current NWEA MAP percentile and score charts for 2026 and 2027 rather than older charts found online.

How Parents Should Read a MAP Percentile

Parents can follow a few simple steps when reviewing a MAP percentile.

First, identify the student’s grade and subject. Next, check whether the assessment was taken during Fall, Winter, or Spring.

Then review the RIT score and achievement percentile together. If previous results are available, compare them with the current score to understand how the student’s performance has changed.

Finally, look at the growth percentile to understand progress compared with students who had similar starting scores.

Find MAP Percentile Scores by Grade Level

You can view updated NWEA MAP scores by grade level, MAP score charts, national averages, percentile ranges, and typical Fall, Winter, and Spring scores at ReadyScores.com.

The charts make it easier to compare a child’s score and percentile with students in the same grade and testing season. Separate information is available for MAP reading scores, MAP math scores, language usage, and science.

Using current charts is particularly important for the 2026–2027 school year because the updated 2025 norms may produce different percentile comparisons than older reference charts.

One Percentile Does Not Tell the Full Story

Parents should remember that one percentile does not describe a student’s complete academic ability.

The MAP Growth Family Report combines achievement, growth, and projected proficiency so families can see both current performance and progress over time.

For example, a student may have a lower achievement percentile but demonstrate strong growth between Fall and Spring. Another student may have a high achievement percentile but show more moderate growth.

Looking at achievement, growth, RIT scores, classroom performance, and teacher feedback together provides a more complete picture of academic development.

About ReadyScores.com

ReadyScores.com is a resource for NWEA MAP scores, MAP scores by grade level, i-Ready scores, STAR scores, national percentile charts, and school assessment interpretation.

The website also provides free calculators in English and German. These include the NWEA MAP Score Calculator, i-Ready Score Calculator, APUSH Score Calculator, Time Duration Calculator, free Timecard Calculator, Work Hours Calculator, Arbeitszeitrechner, Stundenrechner, and other useful education and time tools.

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NWEA MAP Test Scores 2025-2026 [Map Score Charts By Grade Level]

Learn how to interpret NWEA Map test scores for 2025-2026, incl RIT scores, with Map Score charts by grade level in Math and Reading, and percentiles.