To navigate the website, follow these steps:

• Accessing Tools: Use the top main navigation bar to find all the tools. Simply hover over or click on the "Tools" section to see a list of available options, including tools for both reading and math.
• Finding Resources: In the top main navigation, you’ll also find a "Resources" section. This is where you can access support materials and additional resources, such as Decodable Passages, Wordlists, and Grade Level Charts.
• Support and Help: If you need assistance, head to the "Support" link in the top navigation. This section includes Account Management, Membership Options, FAQs, Tool User Guides, and contact information for further help. You will also find accountant management and membership options here.
• Mobile Navigation: On mobile devices, click the menu icon (usually three horizontal lines) to access the same navigation options in a condensed view.

1. Select the "Log In" button at the top of the page (or on any tool page).
2. Choose the option that matches your role: Educator or Parent. If you are an educator, use your school or district-issued email address to qualify for free Premium access (available in partner states).
3. Enter your Email Address, Password, and Confirm Password.
4. Select your Country, State, and District (Educators only) from the drop-down lists.
5. Select the "Create Account" button.
6. Follow the instructions to authenticate your account.

• OS: Windows, iOS, Chromium
• Browsers: Chrome, Firefox, Chrome for Mac
• Screen Readers: JAWS, NVDA
• And a minimum resolution size of 320 x 256 px

For more information visit our Accessibility Statement page.

For Lexile measures, the codes are:

• AD - Adult Directed: Better when read aloud to a student.
• HL - High-Low:  High-interest and age-appropriate content at a lower reading level.
• IG - Illustrated Guide: Nonfiction materials often used for reference.
• NC - Non-Conforming: For high-ability students who still need age-appropriate content.
• BR - Beginning Reader: For students with a Lexile measure below 0L. BR is the only Lexile code that applies to both readers and text. 
• GN - Graphic Novel: Graphic novels or comic books.
• NP - Non-Prose: Text with non-standard or absent punctuation (e.g. poetry or plays).

Visit our page Lexile Codes for Matching Readers to Books to learn more.

• EM - Emerging Mathematician: Measures below 0Q are reported as EM---Q (e.g., a Quantile measure of -120 is reported as EM120Q). This code is predominantly seen for material and student measures at the early grade levels.
• HMC - Higher Mathematical Content: Material designated as “HMC” is content for which we have QSCs but the QSCs have not yet been researched to identify their measures. These QSCs are currently in statistics and precalculus.
• NMQ - Not Measurable in Quantiles: Material designated as “NMQ” is content that is extensively diverse in QSCs or strands so it cannot be classified within the Quantile framework. Some examples are quizzes, tests, riddles, review sheets/activities, and process skills such as working backward, justifying, drawing pictures, etc.

• Sometimes publishers submit books with the same title, but the contents may be slightly different depending on the edition. 
• In 2017 MetaMetrics updated the Lexile algorithm to better account for special text characteristics (i.e. decodability of words, sentence patterns, high-frequency words, repetition). This update allows for the precise assignment of Beginning Reader (BR) measures. However, some previously measured books’ Lexile measures also changed to reflect the enhanced algorithm. 
• There may be an error in the information management system. If that is the case, the Find a Book team will be notified and will correct the error.

To use the Lexile Analyzer ChatGPT plugin, you'll need two separate accounts: a ChatGPT account and a new MetaMetrics account for ChatGPT. Follow the steps below to open and log in to the Lexile Analyzer ChatGPT plugin: 

1. Sign in to or register for a ChatGPT account at chatgpt.com.
2. Open the Lexile Analyzer ChatGPT plugin using this link: MetaMetrics Lexile Analyzer.
3. After opening the Lexile Analyzer ChatGPT App, select “Install plugin” and register for a new MetaMetrics account.

Note: Your existing Lexile Hub account cannot be used to access the ChatGPT App. You'll need to create a new MetaMetrics account specifically for the app.

1. Open a new chat in ChatGPT
2. Select the + icon in the message composer.
3. Select Lexile Analyzer to add it to your conversation. [add image of search bar]
4. Paste the text you want to analyze into the chat.
5. Ask a question, such as: What is the Lexile measure of this text? 
6. After the analysis is complete, you can also select to rewrite the text at a lower or higher Lexile level while preserving the original meaning.

Look for the Lexile Analyzer plugin box in the chat.

You'll recognize it by the MetaMetrics logo, the Lexile measure, and the two buttons "Lower Lexile Measure" and "Increase Lexile Measure." Anything inside this box is generated by Lexile Analyzer.

Note: Anything outside this box is generated by ChatGPT and hasn't been reviewed by MetaMetrics. ChatGPT can make mistakes. Check important information.

For the most accurate results, prepare your text so it contains only complete, conventional prose before submitting it to the Lexile Analyzer. The analyzer was designed to measure professionally edited prose, so including other types of content can lead to inaccurate results.

Before analyzing your text:

• Use traditional prose such as articles, passages, or short stories.
• Do not analyze student writing, poetry, worksheets or classroom activities, plays, song lyrics, recipes, or other non-prose text. These text types are not appropriate for measurement and may produce unreliable results.

Note: Results from the Lexile Analyzer are intended for classroom and instructional use only. They provide an estimated Lexile measure to support instructional decisions and are not certified Lexile measures. They should not be used or represented as official, certified Lexile measures.

• The O*NET Program is the nation's primary source of occupational information. O*NET information is used by millions of individuals every year, and the data have proven vital in helping people find the training and jobs they need.
• Bureau of Labor Statistics, a unit of the United States Department of Labor
• Projections Managing Partnerships, an integrated, nationwide program of state and local projections

• Recommended Growth Path: This path represents how the student should grow and what the student should be able to read to be on track for college and careers after Grade 12 given his/her Lexile measure(s).
• Estimated Growth Path:  This path represents how the student will likely grow given his/her Lexile measure(s).

To learn about the different ranges displayed on the graph, refer to the Growth Planner User Guide.

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Norms are a way of comparing a student's performance to a large group of peers in the same grade. They help educators and parents understand how a student's reading or mathematics achievement compares with that of their peers nationwide.

Norms tell you how a student's performance compares with that of other students in the same grade and season nationwide. They provide:

• • National percentile ranks to show how a student compares with peers.
  • Seasonal norms (fall, winter, and spring) to account for expected learning throughout the school year.

Norms do not:

• • Indicate whether a student has met state or local proficiency standards. They compare a student's performance to that of a national reference group, not to state-specific achievement expectations.
  • Define expected student growth. They describe how students typically perform at a given grade and testing window (Fall, Winter, or Spring).
  • Indicate how much an individual student's Lexile or Quantile measure is expected to change over time.

Norms, like those presented on the Grade Level Charts, provide a measure of how students at a given percentile typically perform. Norms are not a judgment of what is good, bad, or acceptable, they simply indicate what is a typical performance at a given percentile.

Standards are performance targets set by a group or organization. A standard uses data to set goals and to determine when performance exceeds, meets, or misses expectations. In education, standards are typically set by states and each state has its own standards.

So, a student at the 50th percentile could be both at the midpoint of student national norms and “not meet grade-level performance standards” in their state.

To learn more about the differences between norms and standards, visit the Norms and Standards: How the Tilt-A-Whirl Can Help Explain Student Data blog post.

Student achievement changes over time as educational standards, instructional practices, and learning opportunities evolve. The updated Lexile and Quantile norms represent data from more than 37 million students collected from 2021-2025. 

The assessments have not changed, and a student's Lexile® or Quantile® measure does not change because of the updated norms. A Lexile measure continues to represent a student's reading ability, and a Quantile measure continues to represent a student's mathematics achievement using the same trusted scales educators have relied on for years.

Updated norms may change percentile ranks, national comparisons, and growth expectations. Percentile ranks compare a student's performance to a national reference group. Because the reference group has been updated, a student's percentile rank may change even if their Lexile® or Quantile® measure remains exactly the same. A change in percentile rank reflects an updated comparison to today's student population, not a change in the student's reading or mathematics achievement.

Overall, the new norms indicate lower student percentile ranks across many grade levels compared to the previous norms, a pattern that is consistent with broader trends reported by other assessment providers, although patterns vary by grade and subject.

For example, if a student has a Lexile measure of 850L, that measure remains 850L. However, the percentage of students nationwide who score above or below 850L may have changed since the previous norms were established.

Lexile and Quantile performance in later grades (i.e., 11 and 12) do not demonstrate notable increases in the data used to calculate the norms, indicating that actual student performance is similar to prior grades or even lower. These results are similar to results observed by researchers, assessment providers, and federal education and assessment agencies (e.g., NAEP).

These norms are based on results from millions of students in kindergarten through grade 12, across all 50 states, collected over multiple school years (2021–2025). That's a large, geographically diverse comparison group, so your child's percentile rank reflects a meaningful comparison to students nationwide.

For educators: These norms provide a national reference point, not a statistically nationally representative sample. They're built from linked interim and summative assessment results reported across all 50 states, weighted to align with the distribution of students across the four NCES regions (Midwest, Northeast, South, and West). 

However, they are not based on a systematic national sampling plan designed to mirror the demographic, geographic, and socioeconomic characteristics of the U.S. student population, and the assessments administered and student populations represented vary across states. Treat norms as a broad, defensible reference point, one part of a comprehensive picture of student performance, rather than a precise demographic-matched benchmark.

Norms provide valuable context for understanding how a student's performance compares with peers nationwide, but they should be considered only one part of a comprehensive picture of student learning.

For educators: Use Lexile® and Quantile® measures alongside classroom performance, teacher observations, curriculum-based assessments, and other relevant information to understand and monitor student progress and to inform instructional decisions.

For families: National comparisons can provide helpful context, but one of the most important indicators of success is your child's individual growth over time. Consider your child's Lexile or Quantile measure alongside feedback from teachers, classroom work, and other information that reflects their ongoing learning and development.

• Student factors: A student’s focus can be affected by fatigue, motivation, or outside stress. If they aren't fully focused, they may rush through the test, not read questions carefully, or miss details, affecting their performance.
• Test factors: Tests are designed for different purposes. For example, a progress-monitoring test gives different insights than a high-stakes, end-of-year test, which often motivates students more. Summative tests typically carry more weight and may impact grades or graduation.
• Administration factors: How and where the test is given also matters. Distractions like poor lighting, noise, or missing tools can affect performance. Proper test security is important—students accessing outside help or seeing test-related materials during the test can alter results.
• Combination of factors: Often, it’s a mix of these factors that leads to variations in scores. For example, students might be more motivated for a high-stakes test given under strict conditions compared to a lower-stakes one in a relaxed environment.

• Communicate upcoming assessment dates in advance with parents and caregivers.
• Encourage parents to help their child get a good night’s rest and a healthy breakfast before a test.
• Motivate students through praise and encouragement. Highly motivated students perform better and see less variation in their test scores. Studies show that students achieve at higher levels when they feel competent and see a direct link between their actions and an outcome.

• Help your child get a good night’s sleep before the test. 
• Make sure your child eats a healthy breakfast the morning before the test. 
• Talk to your child about the importance of doing their best on a test to show what they know and have learned.

To help parents better understand Lexile and Quantile measures invite them to visit the Lexile & Quantile For Parents for an overview of the measures and what they can do with them.

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Visit the Professional Learning page to learn more!