For the 2026–2027 school year, NWEA MAP Growth results continue to use the 2025 MAP Growth norms as the national reference point. These norms help schools and families understand how a student's performance compares with other students in the same grade and subject. Because MAP Growth is a computer-adaptive assessment, the test adjusts the difficulty of questions according to a student's responses, producing a score designed to measure what the student currently knows and is ready to learn next.
What Is an NWEA MAP RIT Score?
The most important number on a MAP Growth report is usually the RIT score. RIT stands for Rasch Unit, and it is the scale NWEA uses to measure student achievement and growth.
Unlike a percentage score, the RIT scale is designed as an equal-interval scale. This means that a 10-point increase represents approximately the same amount of measured growth regardless of where a student starts on the scale.
For example, a student who increases from 175 to 185 has gained 10 RIT points, while a student who increases from 215 to 225 has also gained 10 RIT points. The RIT score therefore makes it possible to track progress across multiple testing seasons.
However, a RIT score should not be interpreted by itself. To understand what the result means, look at it alongside:
Student's grade level
MAP subject
Fall, Winter, or Spring testing season
National grade-level norms
Achievement percentile
Previous RIT score
Growth percentile
Instructional or projected growth information
This context is what turns a single number into useful information.
What Is an NWEA MAP Percentile?
The achievement percentile shows how a student's MAP performance compares with students in the same grade nationally.
For example, if a student receives an achievement percentile of 75, that means the student's score was as high as or higher than approximately 75 percent of students in the comparison group.
A percentile is not the same as a percentage correct.
A student at the 75th percentile did not necessarily answer 75% of the questions correctly. Instead, the percentile describes the student's relative position compared with other students.
Here is a simple way to understand percentile ranks:
Percentile General Interpretation
1st–24th Below the national middle range
25th–49th Below or around the national middle range
50th Around the national median
51st–74th Above the national middle range
75th–89th Strong relative performance
90th–99th Very high relative performance
These descriptions are only general guidelines. A student's school may use additional achievement categories or instructional benchmarks when interpreting MAP results.
RIT Score vs. Percentile: What's the Difference?
RIT and percentile answer two different questions.
RIT score:
What level of achievement does the MAP Growth scale measure for this student?
Achievement percentile:
How does this student's achievement compare with other students in the national comparison group?
For example, imagine a student receives a Math RIT score of 215 and an achievement percentile of 68.
The 215 RIT score describes the student's position on the MAP Growth measurement scale.
The 68th percentile explains how that performance compares with students in the relevant national norm group.
Neither number should be viewed as a traditional classroom grade.
What Are the 2025 MAP Growth Norms?
For 2026–2027, one of the most important details for parents to understand is the use of the 2025 MAP Growth norms.
Norms provide the national comparison data used to interpret MAP Growth results. They help answer questions such as:
How does this RIT score compare with other students in the same grade?
What percentile corresponds to this achievement level?
How much growth is typical between Fall and Spring?
Is the student's growth above, near, or below the national comparison group?
NWEA periodically updates its norms because student achievement and growth patterns change over time. As a result, an older MAP score chart may produce a different percentile for the same RIT score.
The RIT scale itself has not simply been "reset." Instead, the normative comparison data used to interpret scores has been updated.
Why the Same RIT Score Can Have a Different Percentile
This is one of the most confusing parts of MAP Growth reports.
Suppose a student receives the same RIT score in two different norming systems. The student's RIT number does not automatically change. However, the percentile associated with that score can change because the comparison population and statistical reference points have been updated.
That is why parents should be careful when using older MAP score charts found online.
A chart based on previous norms may not accurately represent the percentile associated with a student's score under the current norms.
For the 2026–2027 school year, parents should look for information based on the current 2025 MAP Growth norms whenever possible.
How to Read Your MAP Growth Report
When you receive a MAP Growth report, start with the student's subject and testing season.
For example, a Math report may show:
Fall RIT score
Winter RIT score
Spring RIT score
Achievement percentile
Growth percentile
Growth compared with national norms
Instead of asking only, "Is this RIT score good?" ask several questions.
1. What Is the RIT Score?
The RIT score provides the student's measured achievement on the MAP Growth scale.
2. What Is the Achievement Percentile?
This tells you how the student's achievement compares with the relevant national comparison group.
3. How Much Did the Student Grow?
Compare the current RIT score with the previous testing period.
For example:
Fall: 198
Spring: 208
Growth: +10 RIT points
The 10-point increase is more meaningful when compared with the expected growth for that student's grade, subject, and starting achievement level.
4. What Is the Growth Percentile?
Growth percentile is different from achievement percentile.
Achievement percentile describes where the student is performing compared with peers.
Growth percentile describes how much the student progressed compared with students with similar starting achievement.
A student can therefore have a relatively average achievement percentile but a very strong growth percentile—or the opposite.
Is a Higher MAP RIT Score Always Better?
Generally, a higher RIT score represents higher measured achievement on the MAP Growth scale. However, simply comparing two students' RIT scores without considering grade and subject can be misleading.
A RIT score should always be interpreted within its appropriate context.
For example, a Math RIT score and a Reading RIT score are not interchangeable. Similarly, the typical RIT range changes as students progress through school.
The better question is not simply:
"Is 210 a good MAP score?"
Instead, ask:
"How does a RIT score of 210 compare with the national norms for this student's grade, subject, and testing season?"
That comparison provides much more useful information.
MAP Scores by Subject
NWEA MAP Growth assessments can cover several academic areas, depending on the tests administered by a school.
MAP Math Scores
Math MAP Growth measures mathematical achievement across areas such as operations, algebraic thinking, geometry, and data-related concepts.
Parents can use the RIT score, percentile, and growth information together to understand current performance and progress.
MAP Reading Scores
Reading MAP Growth measures reading achievement and helps identify a student's current instructional level.
Because reading development changes substantially across grade levels, it is especially important to compare the RIT score with the appropriate grade and testing-season norms.
MAP Language Usage Scores
Language Usage results provide information about skills related to grammar, conventions, and language development.
As with other MAP subjects, the RIT score should be considered alongside percentile and growth information rather than treated as a standalone grade.
MAP Science Scores
MAP Growth Science results can also be reported using the RIT scale. Depending on the assessment and grade, science results provide another way to measure achievement and track growth over time.
What Is a "Good" NWEA MAP Score?
There is no single RIT number that is automatically considered a "good" MAP score for every student.
A score that is strong for one grade may be typical for another. The testing season also matters because students are expected to grow throughout the school year.
For this reason, a more useful interpretation considers:
Grade + Subject + Season + RIT Score + Percentile + Growth
A student who has a lower RIT score but demonstrates substantial growth may be making excellent academic progress.
Likewise, a student with a high achievement percentile should still be monitored for continued growth.
Why Growth Matters as Much as Achievement
One of the biggest advantages of MAP Growth is that it is designed to measure both achievement and progress.
Imagine two students:
Student A
Fall RIT: 205
Spring RIT: 213
Growth: +8
Student B
Fall RIT: 185
Spring RIT: 198
Growth: +13
Student A has the higher final RIT score, but Student B experienced more measured growth.
This illustrates why looking only at the final RIT score can leave out an important part of the story.
MAP reports are most useful when families look at both the current achievement level and the student's growth over time.
Common MAP Score Mistakes Parents Should Avoid
Mistake 1: Treating RIT as a Percentage
A RIT score of 200 does not mean the student got 200 points out of 100 or answered a particular percentage of questions correctly.
Mistake 2: Confusing Percentile With Percentage
The 80th percentile does not mean the student answered 80% of questions correctly.
Mistake 3: Comparing Different Subjects Directly
A Math RIT score should not be compared directly with a Reading RIT score as though they represent the same skill.
Mistake 4: Using an Outdated Score Chart
MAP norms can be updated. A chart based on older norms may not provide the most appropriate percentile comparison for current results.
Mistake 5: Looking Only at One Test
A single MAP score is a snapshot. Looking at Fall, Winter, and Spring results can reveal a much clearer growth pattern.
How to Use MAP Scores for 2026–2027
For the 2026–2027 school year, parents can use MAP results as one part of a broader academic picture.
Start with the student's RIT score, then check the achievement percentile. Next, compare the current result with previous MAP testing periods to identify growth.
If a score appears lower than expected, don't immediately assume the student is falling behind. Consider the student's previous score, testing conditions, instructional history, and growth percentile.
Likewise, a high percentile does not mean there is nothing left to work on. MAP Growth can help identify areas where a student is ready for additional challenge.
Final Takeaway: Understand the Whole MAP Report
The easiest way to understand NWEA MAP Test Scores is to stop looking for one magic number.
The RIT score tells you where the student falls on the MAP Growth measurement scale. The achievement percentile shows how that performance compares with students in the relevant national norm group. The growth result shows how much the student has progressed, while the growth percentile puts that progress into a national comparison.
For 2026–2027, the current 2025 MAP Growth norms provide the reference point for interpreting these results. When reviewing your child's report, always consider the grade, subject, testing season, RIT score, percentile, and growth together.
A MAP score is most valuable when it helps answer a practical question: What does my child know now, how much have they grown, and what should they learn next?
About ReadyScores.com
ReadyScores.com is a resource for understanding NWEA MAP scores, MAP score charts by grade level, i-Ready scores, STAR scores, and national percentile information. The goal is to make school assessment results easier for parents and students to understand.
The site also provides free calculators in English and German, including the see the NWEA MAP scores by grade level in math as published on www.ReadyScores.com Score Calculator, i-Ready Score Calculator, APUSH Score Calculator, Time Duration Calculator, Timecard Calculator, Work Hours Calculator, Arbeitszeitrechner, and Stundenrechner.
