What are the DIBELS words per minute benchmarks?

The DIBELS words per minute benchmark is oral reading fluency, the number of words a child reads aloud correctly in one minute from a passage. The University of Oregon publishes the benchmark goals for DIBELS 8, and they give one cutoff per grade and per season. The minimum for core support, the blue goal, starts at 35 words correct per minute in first grade at the beginning of the year ¹ and reaches 164 in seventh grade at the end ². The sheet covers grades 1 to 8.

The table below gives the full set of core-support minimums. Read across the row for your child's grade, and then down to the season you are checking.

The benchmark counts words correct, not words typed

The DIBELS score is words correct per minute (WCPM), which is the words read in one minute minus the words read incorrectly ³. Oral reading fluency is generally defined as the number of words a reader gets right in one minute of reading aloud ⁴. A misread word, a skipped word and a long hesitation all lower the score. The glossary entry on oral reading fluency explains the term.

That makes it a different unit from typing speed. A typing test's words per minute counts five characters as one word, and the rates in our guide to speaking speed count real words in a transcript. Neither uses the DIBELS count. Do not compare a DIBELS score with an adult silent reading rate, and do not compare it with a typing score.

The core-support minimum is set for each grade and season

The sheet gives three cutoffs per grade: the beginning, middle and end of the school year. Each is the minimum score for core support. The values for grades 1 to 3 and for grades 4 to 8 come from the same University of Oregon table.

Two things stand out. The cutoffs rise fastest in the early grades, and they level off after fourth grade. The grade 3 end-of-year cutoff, 136, is lower than its middle-of-year cutoff of 141 ¹, so check the official sheet before you quote that cell in a report. Confirm that the link is the version your school uses.

Blue is the goal: core support with negligible risk

The blue band is core support with negligible risk, and it is defined by its own criterion: nearly all students in that range score at or above the 40th percentile on the test's criterion measure ⁵. That definition is why the blue number is the one to check first.

A score below the blue cutoff does not diagnose anything. It tells a teacher that a closer look is worth the time, and the teacher can run another measure before deciding what support a child needs.

Other norm sets give lower typical scores, so check which one your school uses

Some reading reviews report much lower typical numbers, and they are describing something else. In Tindal's 2017 review of oral reading fluency research, grade 2 students begin the year reading about 50 words correct per minute and improve to about 90 by the end ⁶. The same review says grade 4 students begin the fall reading just under 100 words correct per minute and reach about 120 ⁷.

These are typical values, while the DIBELS 8 numbers are minimums for core support on that test. The grade 2 beginning-of-year blue cutoff is 85 ¹, far above the review's typical start of about 50, so a score from one norm should not be read against the other. Before you compare a child's score with any table, ask which test and which norm it came from.

Adult reading rates are a different measure again

Adults also read aloud, and their rate is not a DIBELS benchmark. Brysbaert's 2019 meta-analysis puts the average oral reading rate for adults in English at 183 words per minute ⁸. That is an average across adult studies, so it says nothing about where a child's score should fall. The question on average reading speed gives the adult figures in full.

It depends on the passage, the grade and the season

• The passage. The test uses a passage written for that grade. A harder or easier book at home is not measured against the table.
• The season. A child in the middle of the year is measured against the middle-of-year cutoff, not against the end-of-year one.
• The reading mode. The benchmark is for reading aloud. A child's silent reading speed is a separate measure.
• The edition and norm. The DIBELS 8 goals, an earlier DIBELS edition and a review's median values all differ, so a figure without its source is not much use.

What to do with a benchmark

1. Find your child's grade and the season. Use the current season's cutoff, or ask the teacher which windows the school uses.
2. Find the blue cutoff for that grade and season in the table above, or on the official sheet.
3. Ask the teacher for the score and the band. A score below blue is a prompt for a second measure, not a final result.
4. Measure with a grade-level passage if you want to check at home. The question on words per minute by grade level lists the steps for timing a child's reading and counting errors.

For how speaking speed is calculated, see the question on how to calculate speaking speed. The words per minute glossary entry defines the typing unit that these benchmarks should not be confused with, and the guide to speaking speed sets out the rates for speaking, reading and narration. The whole subject sits in our guide to typing speed.