Reading Level Charts Explained
Short answer: there is no single reading level chart, because the four systems American schools use are not measuring the same thing. Lexile puts text difficulty and reader ability on one number scale. The F&P Text Level Gradient sorts books by how hard they are to teach with, on a letter scale. ATOS, behind Accelerated Reader, measures how readable a book is and says nothing about your child. DRA is an assessment schools administer. A chart that converts between them is comparing three different questions.
The part almost nobody tells you: the companies that own these systems say this themselves. Fountas and Pinnell describe their own grade chart as "a thinking tool" giving "approximate expectations" that "should be adjusted based on school/district requirements and professional teacher judgment". MetaMetrics warns that a child at the 50th percentile on its Lexile charts "could be both at the mid-point of student norms and 'not meet grade-level performance standards'". Verified July 27, 2026.
Why you keep finding different numbers
If you have searched this question more than once you will have noticed the charts disagree, and the natural conclusion is that one of them must be wrong. That is not what is happening. Each chart is the correct answer to a different question, published by a different company, for a different purpose.
One measures how hard a text is. One measures how a child performed relative to other children. One sorts books into an order a teacher can move a small group through. They were never built to line up, and the companies that sell them do not claim they do.
This is also why we do not publish a conversion table here, and it is a deliberate decision rather than a gap. The grade bands quoted around the web contradict each other, so republishing one would mean picking a number and hoping. These are also commercial systems, and reproducing a company's proprietary table is copying rather than citing. What follows instead is what each system actually measures, in its owner's own words.
What each system actually measures
| System | What it measures | The catch |
|---|---|---|
| Lexile (MetaMetrics) | Both text difficulty and reader ability, on one scale, written with an L (for example 620L) | Its official Lexile Grade Level Charts are percentile norms, not a pass mark. Results are given at the 10th, 25th, 50th, 75th and 90th percentile, and separately for fall, winter and spring |
| F&P Text Level Gradient (Fountas and Pinnell) | How hard a book is to teach with, on a letter scale from A to Z. Often called Guided Reading levels | Built for choosing books for small-group instruction. Fountas and Pinnell call their own grade chart a thinking tool giving approximate expectations |
| ATOS (Renaissance, used by Accelerated Reader) | How readable a text is, written as a grade decimal such as 4.5 | It measures the book, not the child. Renaissance describes it as a readability formula designed to guide students to appropriate-level books |
| DRA (Pearson) | A running-record style assessment schools administer, reported as a number | We name it because schools use it, but we quote nothing from its documentation because we did not read the publisher's own materials |
The Lexile chart is not the chart you think it is
This is the single most useful thing on this page, because Lexile levels by grade is what most parents actually search for. MetaMetrics does publish a chart called the Lexile Grade Level Charts. It is not a list of what a child in each grade should score.
It reports percentiles: the 10th, 25th, 50th, 75th and 90th, and separately for fall, winter and spring. It is drawn from what MetaMetrics describes as a sample of over three million students across the United States and the Virgin Islands tested between 2010 and 2019. In other words it tells you how children scored, not what they were supposed to score.
MetaMetrics is explicit about the difference, and this is the sentence to hold on to: a student "could be both at the mid-point of student norms and 'not meet grade-level performance standards'". Percentiles describe how a student performed compared with all the students measured; performance standards, in their words, are set by states and assessment developers. Those are two different rulers, and a child can land in a comfortable place on one and a worrying place on the other.
Lexile also publishes more than one chart, answering different questions about text and about readers. That is a fair thing for a measurement company to do, and it is another reason two people quoting "the Lexile chart" can both be right and still disagree.
What Fountas and Pinnell say about their own chart
The letter levels, A through Z, are the other thing parents are handed. Fountas and Pinnell describe the F&P Text Level Gradient as something that "should be seen as a continuum of progress for readers", and as a tool for selecting books for small-group reading instruction. Its job is matching a book to a moment in teaching.
Their grade-level chart carries its own caution, in their words. It is "a thinking tool: a way to think about text levels". It shows "approximate expectations for a year of progress by grade level". And it is "intended to provide general guidelines for grade level goals which should be adjusted based on school/district requirements and professional teacher judgment".
Read that twice, because it is the opposite of how the chart usually reaches parents. The people who built it describe it as approximate, local and subject to a teacher's judgment. It was not written to tell you whether your eight year old is behind.
Why an Accelerated Reader number is about the book
If your child comes home talking about AR levels, the number attached to a book is ATOS, from Renaissance. Renaissance defines it as "a measure of readability", a formula "designed to guide students to appropriate-level books", calculated from average word length, average word grade level, average sentence length and book length.
It is expressed as a grade decimal, which is where the confusion starts. An ATOS of 4.5 describes a text a reader with the comprehension skills typical of a student in the fifth month of grade 4 could handle. It is a label on the book. It is not a score your child earned, and a book being 4.5 tells you nothing on its own about whether your fourth grader should be reading it.
What to do instead of hunting for a chart
- Ask the school three questions. Which system do you use, what was my child's most recent result, and what does that mean for the books they should pick now. A number without its system and its date is not information.
- Use the number for books, not for judgement. All of these systems are good at their real job, which is putting a readable book in a child's hands. None of them was designed to be a verdict on a child.
- If you are worried, use the free route first. A US public school can assess a child's reading at no cost to you, and that assessment, not a chart you found online, is what identifies a real difficulty. Our guide to when kids learn to read sets out the ages and the standards behind them, and our reading readiness checker lets you look at the specific skills, each one tagged to a named source, without producing a score.
- Grade-specific expectations, when you want them, come from published standards rather than from a leveling company. Our page on what reading level a 2nd grader should be at works through one grade that way, using the standards themselves.
If the answer is that your child is behind
Sometimes the honest reading of all this is that a child is struggling, and the next question is what to do. The order matters and the free step genuinely comes first: ask the school for an assessment, because it costs nothing, it is more thorough than anything online, and it is the only route that can identify a specific difficulty. If a difficulty is diagnosed or suspected, our guide to dyslexia tutoring and Structured Literacy covers what qualified help looks like and carries no product recommendation at all.
If the school route is done and what you want is structured teaching outside school hours, that is a different need and there are paid programs built for it. Raising Skilled Readers, run by the Institute of Reading Development, teaches in live scheduled classes rather than leaving a parent to deliver a curriculum, which is the practical difference for most families. Our Institute of Reading Development review is honest about the cost, the refund window and who it does not suit, and our best reading programs guide puts the alternatives side by side.
See the Raising Skilled Readers program
The bottom line
There is no master reading level chart because there is no master question. Lexile tells you about a text and a reader on one scale and publishes percentiles rather than pass marks. Fountas and Pinnell sort books for teaching and call their own grade chart approximate. ATOS labels a book's readability. A conversion table between them is a rough bridge between three different measurements, useful for choosing a book and misleading as a verdict on a child. The number that matters is the one your child's school actually uses, and the person who can tell you what it means is their teacher.
Frequently asked questions
Is there a reading level conversion chart?
Conversion charts exist, but the companies that own these systems do not present them as exact equivalents, and we are not going to publish one. Lexile measures text difficulty and reader ability on one scale, the F&P gradient sorts books for teaching, and ATOS is a readability formula for text. Converting between them is a rough approximation of three different questions, not a translation.
Do Lexile levels match grade levels?
Not in the way most parents assume. MetaMetrics publishes Lexile Grade Level Charts, but they are percentile norms drawn from a sample of more than three million US students tested between 2010 and 2019, reported separately for fall, winter and spring. MetaMetrics states directly that a student at the 50th percentile could be at the mid-point of student norms and still not meet grade-level performance standards.
What is a good Lexile score by grade?
There is no single number, and treating one as a target misreads the chart. The published figures are percentiles describing how a child compared with other children tested, while performance standards are set separately by states and assessment developers. A number can be above average and still short of a state standard, or below average in a child who is progressing well. Ask the school what their number means locally.
What is the difference between Lexile and Fountas and Pinnell levels?
They answer different questions. A Lexile measure is a number on a scale that can describe a text or a reader. An F&P level is a letter from A to Z describing how hard a book is to teach with in a small group, and Fountas and Pinnell say the gradient should be seen as a continuum of progress rather than a set of grade labels. A letter cannot be converted into a number cleanly.
How do I find my child's reading level?
Ask the school three questions rather than searching for a chart. Which system do you use, what was my child's most recent result, and what does that mean for the books they should be reading now. Schools can also run a free reading assessment if you are worried, which is your right in a US public school and should come before you pay anyone.
How we reach these verdicts, and the sources behind them, is on our methodology page. The description of the Lexile Grade Level Charts as percentile norms reported by fall, winter and spring, the sample of over three million students tested between 2010 and 2019, and the statement that a student "could be both at the mid-point of student norms and 'not meet grade-level performance standards'" were read from MetaMetrics' own Lexile hub. The F&P Text Level Gradient description, and the wording that the Instructional Level Expectations chart is "a thinking tool" showing "approximate expectations" and "should be adjusted based on school/district requirements and professional teacher judgment", were read from Fountas and Pinnell's own site. The ATOS definition as "a measure of readability" designed "to guide students to appropriate-level books", and its inputs, were read from Renaissance's own site. All verified July 27, 2026. We deliberately publish no grade-band table and no conversion table: the bands quoted elsewhere contradict one another, and these are proprietary commercial systems whose tables are theirs to publish, not ours to copy. DRA is named because schools use it, but we quote nothing from it because we did not read Pearson's own documentation, and we would rather say so than imply a check we did not make. No system is linked; each is credited by name. We earn a commission if you enrol with Raising Skilled Readers through our link, which appears once, below the free school-assessment route, and only for families who have already been through it.