NWEA MAP Score Charts and iReady Inform Score Charts 2027–2028: Percentiles, Norms and Grade-Level Scores

Looking for the latest NWEA MAP score charts for 2027–2028 or the new iReady Inform score charts for 2027–2028?

Start here.

Parents often receive a school test report containing a scale score, RIT score, percentile, placement level, growth number, or several of these at once.

It can be confusing.

Very confusing.

The good news is that both ReadyScores.com and
SchoolTest.org publish detailed score charts that make these numbers easier to understand.

This guide explains how to find and use the NWEA MAP test score charts for 2027, how to interpret iReady Inform scores for the 2027–2028 school year, how percentile charts work, and whether parents should expect the national norms to change.

We will also explain an important distinction.

A score is not a percentile.

And a percentile is not a percentage correct.

Where to Find NWEA MAP and iReady Score Charts for 2027–2028

For a broad collection of standardized-test charts, begin with the
2027 test score charts on ReadyScores.com.

ReadyScores separates the major assessments into dedicated score-chart pages and tools.

For iReady, the most important resources are the
iReady Reading score chart 2027 as published on ReadyScores.com
and the
iReady Math score chart 2027 according to ReadyScores.com.

For NWEA, begin with the
NWEA MAP test scores 2027
page.

Simple enough.

NWEA MAP Test Scores 2027–2028

NWEA MAP Growth uses a score called a RIT score.

RIT stands for Rasch Unit.

Unlike a percentage correct, a RIT score exists on a continuous measurement scale.

That means a student can use the same general scale across multiple grades and testing seasons to track academic growth.

For complete percentile tables, see the
NWEA MAP scores by grade level 2027–2028
guide on ReadyScores.com.

The dedicated subject pages provide much more detail.

NWEA MAP Math Scores 2027

For mathematics, use the
NWEA MAP Math scores 2027
page.

It contains percentile information by grade and testing season.

ReadyScores also publishes a faster visual reference at
NWEA MAP Math score chart 2027 on ReadyScores.com.

The detailed table is best when you want an exact percentile.

The visual chart is faster.

NWEA MAP Reading Scores 2027

For Reading, use the
NWEA MAP Reading scores 2027–2028
guide.

For a faster visual overview, see the
2027 NWEA MAP Reading score chart as seen on ReadyScores.com.

Reading growth often behaves differently from Math growth, particularly in the upper grades.

Context matters.

NWEA MAP Language Scores 2027

Students taking MAP Language Usage can use the
NWEA MAP Language scores 2027
percentile tables.

There is also a shorter
NWEA MAP Language score chart 2027 according to ReadyScores.com.

NWEA MAP Science Scores 2027

Science has its own norms.

Do not compare a Science RIT score directly with a Math or Reading RIT score.

Use the
NWEA MAP Science scores 2027–2028
page for the detailed percentile tables.

For quicker interpretation, see the
NWEA MAP Science score chart 2027 on ReadyScores.com.

What Are the Current NWEA MAP Norms for 2027–2028?

This is important.

The year printed on a score-chart article and the year the underlying norm study was created are not necessarily the same thing.

NWEA introduced a major new national MAP Growth norm study in 2025.

Those norms replaced the older 2020 norms.

The 2025 study used approximately 116 million test scores from 13.8 million students attending around 30,000 schools, with data spanning fall 2022 through spring 2024.

As of September 2026, NWEA has not announced another national norm replacement specifically for the 2027–2028 school year.

So unless NWEA releases another norm study, the 2025 MAP Growth norms remain the relevant national reference for 2027–2028.

Check the
NWEA MAP norms 2027 FAQ on ReadyScores.com
for updates when the school year approaches.

Will NWEA MAP Norms Change in 2027 or 2028?

Possibly.

But not automatically.

A new school year does not mean NWEA creates an entirely new national norm table every August.

Norm studies are major statistical projects.

The 2025 revision was significant because it refreshed the national comparison group after the pandemic and incorporated more recent student performance data.

If no new study is released, schools can continue using the current norm framework.

This means a page titled NWEA MAP score chart 2027–2028 may still legitimately use the 2025 national norm study.

The chart year tells you when you are using it.

The norm year tells you which reference population produced the percentiles.

Different things.

What Changed With the 2025 NWEA Norms?

The RIT scale itself did not simply reset.

The important change was the national reference group.

That means the same RIT score can correspond to a somewhat different percentile under a newer norm study.

For more background, read
NWEA MAP norms and score changes explained by SchoolTest.org.

SchoolTest also maintains its main
NWEA MAP test scores by grade level 2027
resource.

How to Read an NWEA MAP Percentile Chart

You need four pieces of information.

Subject. Grade. Season. Score.

That is it.

Suppose your child receives a MAP Math RIT score.

First, open the correct Math table.

Next, choose the correct testing period: Fall, Winter, or Spring.

Then locate the student’s grade.

Finally, find the RIT score or the closest score shown in the table.

The corresponding percentile tells you how that score compares with students in the national norm group in the same grade and season.

What Does the 50th Percentile Mean?

The 50th percentile is the middle of the national distribution.

A student at approximately the 50th percentile performed as well as or better than roughly half of comparable students in the norm group.

It does not mean the student answered 50 percent of questions correctly.

Very different.

What Does the 75th Percentile Mean?

A student at the 75th percentile scored as well as or better than approximately 75 percent of comparable students.

About 25 percent scored higher.

This generally represents above-average achievement relative to the national reference group.

What Does the 90th Percentile Mean?

The 90th percentile places a student among approximately the highest-scoring 10 percent of students in the relevant grade, subject, and season.

Again, it does not mean 90 percent correct.

What Does the 95th Percentile Mean?

A 95th-percentile result means the score is at or above the performance of approximately 95 percent of the comparison group.

That is a high national ranking.

However, individual school districts set their own rules for gifted programs, advanced classes, or enrichment.

Never assume that one percentile automatically qualifies a child.

Use the NWEA MAP Score Calculator

You do not have to search through a giant table manually.

ReadyScores provides a
NWEA MAP score calculator for 2027.

Enter the subject, grade, testing season, and RIT score.

The calculator can then help translate the raw MAP score into a percentile and a more understandable explanation.

Track NWEA Growth, Not Just Achievement

One score is useful.

A trend is better.

A student may begin below average yet make unusually strong academic growth during the year.

Another student may remain above average while making relatively little growth.

Those are different stories.

Use the
NWEA MAP Growth Tracker 2027 on ReadyScores.com
to compare two scores and examine growth.

What Is a Good NWEA MAP Score in 2027?

There is no single RIT number that counts as a good MAP score for every child.

Grade matters.

Subject matters.

Season matters.

A Math score that is outstanding for a second grader could be below average for an eighth grader.

For detailed grade-by-grade explanations, see
what is a good NWEA MAP score in 2027 by grade.

What Should Parents Do After Receiving a MAP Report?

Do not focus only on the headline number.

Look at the percentile, growth, subject, testing season, and previous results.

The ReadyScores guide
what to do after getting NWEA MAP scores in 2027
walks parents through that process.

If a student is performing below expectations, look at growth before assuming the worst.

Improvement matters.

iReady Inform Score Charts 2027–2028

The other major assessment covered by ReadyScores and SchoolTest is i-Ready.

There is also a name change.

Beginning with the 2026–2027 school year, Curriculum Associates renamed the adaptive assessment previously known as i-Ready Diagnostic to i-Ready Inform.

Same family.

New name.

So parents searching for iReady Diagnostic scores 2027 and parents searching for iReady Inform scores 2027 are largely looking for information about the same adaptive Reading and Mathematics assessment.

Where to Find the iReady Inform Score Charts for 2027

For Reading, use the
iReady Inform Reading score chart 2027–2028 on ReadyScores.com.

For Mathematics, use the
iReady Inform Math score chart 2027–2028 on ReadyScores.com.

For a simpler combined overview, see
iReady score chart by grade 2027 according to ReadyScores.com.

Will iReady Inform Norms Change for 2027–2028?

That has not yet been announced.

Curriculum Associates introduced updated post-pandemic national norms beginning with the 2024–2025 school year.

The company states that its norm data is reviewed regularly and that updates are made when warranted.

That is not the same as promising a new norm table every year.

As of September 2026, there is no official announcement of a completely new set of national iReady Inform norms specifically for 2027–2028.

So parents should not assume that the numbers automatically change when the calendar reaches 2027.

If new norms are released, the
iReady Inform norms 2027 FAQ on ReadyScores.com
is one place to check for updated interpretation.

iReady Inform Is More Than a Name Change

The 2026–2027 transition includes a shorter assessment option with fewer items while Curriculum Associates says it continues to provide national norms, scale scores, grade-level placements, and growth information.

The important point for parents is continuity.

Historical scores do not suddenly become meaningless because the product name changes from i-Ready Diagnostic to i-Ready Inform.

How to Interpret an iReady Percentile Chart

The process is similar to MAP.

Start with the subject.

Math or Reading.

Then choose the child’s current grade and the correct testing season.

Find the student’s scale score.

The percentile tells you how that result compares with the national norm group for students in the same grade and testing period.

Do Not Confuse iReady Percentiles With Placement Levels

This is probably the most important iReady distinction.

Percentiles are norm-referenced.

Placement levels are criterion-referenced.

A percentile answers:

How did this student compare with other students?

A placement level answers:

How does this student’s demonstrated skill level compare with grade-level expectations?

Those are related questions.

They are not identical.

For a detailed explanation, see
iReady placement levels for 2027 explained by ReadyScores.com.

What Do iReady Levels AA Through H Mean?

Parents also encounter letter levels.

These are another concept again.

The iReady instructional level system commonly uses levels AA through H for the K–8 progression.

Do not confuse these instructional levels with national percentile rankings.

For the complete breakdown, see
iReady levels AA, A, B, C, D, E, F, G and H in 2027.

Use the iReady Score Calculator for 2027

If you already have a score, the fastest approach may be the
iReady score calculator 2027 on ReadyScores.com.

Enter the student’s grade, season, subject, and scale score.

This helps connect the score with its percentile and placement context.

Track iReady Growth Across the School Year

Fall is a starting point.

Winter adds context.

Spring shows the full-year trend.

Use the
iReady growth tracker for 2027
to compare results across testing periods.

Do not panic over one test.

Look for patterns.

What If an iReady Score Is Below Grade Level?

A below-grade placement does not mean a child cannot catch up.

It identifies the current instructional gap.

For a detailed parent guide, read
what to do when an iReady score is below grade level in 2027.

You can also read
how to understand and improve iReady scores according to ReadyScores.com.

ReadyScores.com iReady Resources for 2027–2028

The following ReadyScores pages cover iReady Diagnostic and iReady Inform scores, charts, placement, growth, and interpretation.

ReadyScores.com NWEA MAP Resources for 2027–2028

SchoolTest.org iReady Score Pages

SchoolTest.org also maintains a large archive of iReady score charts, percentile tables, placement tables, and score explanations.

These can be useful when comparing current 2027 results with previous norm tables and historical score ranges.

SchoolTest.org NWEA MAP Score Pages

For MAP Growth, SchoolTest maintains both newer score-chart resources and older pages that are useful for seeing how norms have changed over time.

Why Historical Score Charts Still Matter

An old chart should not be used as the primary interpretation tool when a newer norm study has replaced it.

But historical tables are still useful.

They show how national performance and percentile mappings have changed.

For example, if the same RIT score placed a student at one percentile under the 2020 MAP norms and another percentile under the 2025 norms, the student’s actual RIT score did not suddenly change.

The comparison group changed.

That distinction is fundamental to understanding norm-referenced testing.

Scale Scores vs Percentiles

A scale score measures performance on the assessment’s underlying scale.

A percentile measures relative standing.

Think of it this way.

The scale score asks:

Where is the student on the assessment scale?

The percentile asks:

Where does that score place the student compared with similar students?

The first number can remain the same while the second changes when national norms are updated.

Achievement Percentile vs Growth Percentile

These are also different.

Achievement percentile describes the student’s current performance relative to peers.

Growth percentile describes how much progress the student made compared with students who started from a similar position.

A student can have low achievement and strong growth.

That is good news.

It means the student may still be behind but is closing the gap.

Why Fall, Winter and Spring Charts Are Different

Students are expected to learn during the school year.

So the national comparison for Fall is not necessarily identical to the national comparison for Spring.

A score that looks strong in September may represent a different percentile by May.

Always use the correct season.

Always.

Can You Compare NWEA MAP and iReady Scores Directly?

No.

Do not compare an iReady scale score directly with an NWEA RIT score.

They are different assessment systems built on different scales.

A MAP score of 210 and an iReady score of 510 do not have a mathematical relationship simply because both are assessment scores.

Instead, compare their percentiles or grade-level interpretations separately.

Is the 50th Percentile Always “On Grade Level”?

No.

This is especially important with iReady.

National percentile rankings and grade-level placement cut scores answer different questions.

A student can potentially be below the 50th national percentile while still meeting the criterion for an on-grade-level placement.

Use both pieces of information.

What If a Child’s Percentile Drops but Their Score Goes Up?

That can happen.

Suppose a student’s RIT or scale score rises.

Good.

But if comparable students nationally improve even more over the same period, the student’s percentile could still decline.

That does not mean the child learned nothing.

It means the child’s relative position changed.

What If the Percentile Rises?

A rising percentile generally means the student improved relative to the comparison group.

If the student’s scale score also rises, that is usually an especially encouraging combination.

Still, look at more than one testing period.

Do Scores Normally Increase Every Year?

Generally, younger students tend to make larger scale-score gains than older students.

That is normal.

A first grader may gain many RIT points over a school year, while an eighth grader may make a much smaller numerical gain and still be progressing normally.

Never apply elementary-school growth expectations to high school students.

What Parents Should Check on a 2027–2028 Score Report

When the report arrives, check the following:

Assessment name: NWEA MAP Growth or iReady Inform.
Subject: Reading, Math, Language, or Science.
Student’s current grade.
Testing season: Fall, Winter, or Spring.
Scale or RIT score.
National percentile.
Placement level, if provided.
Previous score.
Growth from the previous testing period.

Then use the correct chart.

Do Not Use a 2020 NWEA Chart for a 2027 Score

This deserves emphasis.

NWEA refreshed its national norms in 2025.

Older 2020 norm charts remain useful for historical comparison, but they should not replace the newer norm reference when interpreting current MAP results.

Use the
current NWEA MAP score charts for 2027 on ReadyScores.com
or the
current NWEA MAP charts according to SchoolTest.org.

Will ReadyScores Update the Charts If New Norms Are Released?

That is the important part of maintaining a current score resource.

If NWEA or Curriculum Associates publishes a new national norm study for 2027–2028, current score pages should be updated to reflect that change rather than simply changing the year in the headline.

Real update.

Real data.

Parents should always check the stated source year shown with a chart.

MyTestingScores.com

For another general starting point for educational test-score information, visit
MyTestingScores.com.

For the detailed iReady and NWEA resources discussed in this guide, use the dedicated ReadyScores.com and SchoolTest.org links above.

Frequently Asked Questions

Are there new NWEA MAP norms for 2027–2028?

As of September 2026, NWEA has not announced another national norm study replacing its 2025 MAP Growth norms. Unless a newer study is released, the 2025 norms remain the current basis for interpreting 2027–2028 MAP percentile scores.

Will NWEA MAP scores reset in 2027?

No scheduled annual reset has been announced. MAP uses a continuous RIT scale. A norm update may change how a RIT score maps to a national percentile, but that is different from resetting the RIT scale itself.

Are iReady Diagnostic scores changing to iReady Inform scores?

The assessment formerly called i-Ready Diagnostic is renamed i-Ready Inform beginning with the 2026–2027 school year. Parents may therefore see both names when searching historical and current score information.

Will iReady norms change for 2027–2028?

No new 2027–2028 national norm set has been officially announced as of September 2026. Curriculum Associates says its national norm data is reviewed regularly and norms are updated when warranted.

What is the easiest way to understand an NWEA score?

Use the
2027 NWEA MAP score calculator
or find the student’s grade, subject, season, and RIT score in the appropriate percentile chart.

What is the easiest way to understand an iReady Inform score?

Use the
2027 iReady score calculator
and then review the student’s percentile and placement level separately.

Is the 50th percentile a passing score?

Neither MAP Growth nor iReady Inform is best understood as a traditional pass/fail test. The 50th percentile means approximately middle-of-the-distribution performance compared with the relevant national norm group.

Does 90th percentile mean 90 percent correct?

No.

It means the student’s score was as high as or higher than approximately 90 percent of the relevant national comparison group.

Should I compare Fall scores with Spring scores?

Yes for measuring growth, but use the correct seasonal norms when interpreting percentiles. Do not take a Fall score and look it up in a Spring percentile chart.

Which NWEA chart should I use?

Use the subject-specific chart:
NWEA MAP Math scores 2027,
NWEA MAP Reading scores 2027,
NWEA MAP Language scores 2027,
or
NWEA MAP Science scores 2027.

Which iReady chart should I use?

Use the
iReady Reading score chart 2027
for Reading and the
iReady Math score chart 2027
for Mathematics.

NWEA MAP and iReady Inform Scores 2027–2028: The Bottom Line

Do not let the number alone scare you.

Find the context.

For NWEA MAP Growth, identify the RIT score, grade, subject, season, percentile, and growth trend.

For iReady Inform, look at the scale score, percentile, grade-level placement, subject, season, and growth.

Then choose the correct chart.

For current iReady information, start at
ReadyScores.com iReady score charts for 2027–2028
and use the dedicated Reading and Math tables.

For MAP, visit the
NWEA MAP Test Scores 2027–2028
guide and then move to the subject-specific Math, Reading, Language, or Science tables.

SchoolTest.org also maintains extensive historical and current resources, including its
NWEA MAP test score charts for 2027
and
iReady score charts by grade according to SchoolTest.org.

One last point.

Watch the norms.

The headline may say 2027–2028, but the underlying norm study is what determines the national percentile comparison. NWEA’s current reference is its 2025 MAP Growth norm study, while Curriculum Associates currently uses its newer post-pandemic iReady national norms and reviews those norms regularly.

If either organization releases a new national norm study for the 2027–2028 school year, use the new tables.

Until then, use the current ones.