What is Acadience Reading K-6? The early literacy screener formerly known as DIBELS Next

Acadience Reading K-6 is a universal screening and progress monitoring assessment that measures how well children in kindergarten through sixth grade are acquiring early literacy skills. It is the current name of the assessment previously published as DIBELS Next, and it consists of six brief, timed measures covering phonemic awareness, phonics, oral reading fluency, and reading comprehension. Teachers give it three times a year to find students who may be at risk for reading difficulties and to check whether extra instruction is working. It is not an IQ test, and it is not a diagnostic instrument for dyslexia or any other condition. This article explains what each measure asks a child to do, how benchmark goals and the Reading Composite Score are read, how the Acadience and DIBELS names came apart, and where a screener ends and a cognitive evaluation begins.

According to the publisher, Acadience Learning, the assessment is composed of six brief measures that function as "indicators" of the essential skills every child must master to become a proficient reader. Each measure is tied to a foundational skill and to a window of grades.

• First Sound Fluency (FSF): a measure of "phonemic awareness," the ability to hear and work with the individual sounds in spoken words. The assessor says a word and the child says its first sound. Used from the beginning to the middle of kindergarten.

• Phoneme Segmentation Fluency (PSF): the child breaks a spoken word into its component sounds, with partial credit for partial segmentation. Used from the middle of kindergarten to the beginning of first grade.

• Letter Naming Fluency (LNF): the child names upper- and lowercase letters presented in random order. The publisher includes LNF purely as an indicator of risk, because letter naming predicts later reading well even though it is not a strong instructional target.

• Nonsense Word Fluency (NWF): a measure of the "alphabetic principle," the understanding that letters stand for sounds. The child reads made-up words such as dif, ik, and nop, sound by sound or as whole words, yielding a Correct Letter Sounds score and a Whole Words Read score. Used from the middle of kindergarten to the beginning of second grade.

• Oral Reading Fluency (ORF) with Retell: the child reads an unfamiliar grade-level passage aloud for one minute while the assessor marks errors, then retells it for up to one minute as a comprehension check. Used from the middle of first grade through sixth grade.

• Maze: a silent comprehension task in which roughly every seventh word of a passage is replaced by a box holding the correct word and two distractors. It can be given to a whole class at once and is used from the beginning of third grade through sixth grade.

An optional Rapid Automatized Naming (RAN) measure is available for kindergarten and first grade. The design reflects the National Reading Panel, which reported in 2000 that effective reading instruction combines explicit phonemic awareness instruction, systematic phonics, fluency work, and comprehension strategies.

Acadience Reading is a form of "curriculum-based measurement," a family of short, standardized, timed probes built to show whether instruction is producing growth in basic skills. Most measures are individually administered and last one minute. The National Center on Intensive Intervention, which reviews screening tools submitted by publishers, lists administration at about five minutes per student and training at four to eight hours for assessors.

Scoring happens live, and the publisher notes that most students will not finish a measure within the time limit by design. Students are never penalized for articulation or dialect differences, and each measure carries a "discontinue rule" so that a child who cannot yet do the task is not pushed through a full minute of failure. For benchmark testing, ORF uses three passages and records the median words correct and median errors, and Retell is given only when a child reads at least 40 words correctly on a passage. On Maze, correct and incorrect responses combine into a Maze Adjusted Score that compensates for guessing.

The paper materials are a free download under an educational use agreement, and the publisher sells data management and digital administration through its Acadience Learning Online platform. Schools comparing benchmark systems often weigh Acadience against aimswebPlus and FastBridge.

At each benchmark period the assessment reports a raw score for each measure and a Reading Composite Score, both interpreted against "benchmark goals" and "cut points for risk." The publisher describes benchmarks as empirically derived, criterion-referenced target scores that represent adequate reading skill for a particular grade and time of year. A criterion-referenced score is compared with a fixed standard rather than with other children's average, one of the clearest ways this assessment differs from an IQ test.

According to the publisher's benchmark handout, the benchmarks come from a 2009-2010 study of 3,816 students in grades K-6 across 13 schools in five states, a subset of whom (1,306) also took an external reading test, the Group Reading Assessment and Diagnostic Evaluation. Scoring above the 40th percentile on that test served as the marker of adequate reading skill, and benchmarks were set at the levels that predicted reaching it.

• At or Above Benchmark: the publisher reports roughly an 80 to 90 percent likelihood of reaching the next benchmark with effective core instruction.

• Below Benchmark: scores between the benchmark and the cut point for risk, where the likelihood is roughly 40 to 60 percent. These students are likely to need "strategic support," meaning targeted supplemental instruction.

• Well Below Benchmark: scores below the cut point for risk, with a likelihood of about 10 to 20 percent. These students are likely to need "intensive support," such as smaller groups and more explicit instruction.

In third grade, for example, the ORF benchmark for words read correctly per minute is 70 at the beginning of the year, 86 in the middle, and 100 at the end, with cut points for risk of 55, 68, and 80. In the middle of kindergarten, the FSF benchmark is 30 points and the cut point is 20.

The Reading Composite Score combines the measures that best predict later outcomes at a given grade and season, and the publisher recommends interpreting it first. Its recipe changes as children grow: at the beginning of kindergarten it is FSF plus LNF, while at the beginning of third grade it is ORF words correct, plus twice the Retell score, plus four times the Maze Adjusted Score, plus a value derived from ORF accuracy. Because the ingredients differ, the composite is not comparable across grades; it shows whether a child is on track now rather than how much the child has grown.

Readers who know the assessment as DIBELS are using an older name. The measures grew out of work by Roland Good III and Ruth Kaminski, who published an early description of their approach in 1996 and later founded Acadience Learning. Their assessment was published for years under the DIBELS mark; the 2010 edition was DIBELS Next, which added comprehension measures including Maze.

The publisher's benchmark handout explains the split in a footnote: Acadience Reading K-6 is the new name for the DIBELS Next assessment, the DIBELS Next copyrighted content is owned by Acadience Learning, and the DIBELS and DIBELS Next trademarks were sold to the University of Oregon, which now owns them. The University of Oregon then published its own DIBELS 8th Edition in 2018. The National Center on Intensive Intervention still lists the tool as "Acadience Reading K-6 (aka DIBELS Next)."

The result is two product lines with a shared ancestry. Our article on what DIBELS is covers the University of Oregon's current edition; Acadience Reading K-6 is the DIBELS Next material, maintained by its original authors.

Acadience Reading measures reading skills that are taught, against grade-level expectations. An IQ test measures general cognitive ability across domains such as reasoning, spatial ability, working memory, and processing speed, and reports scores relative to same-age peers on a scale with a mean of 100 and a standard deviation of 15. A child who reads 55 words a minute in third grade may be bright and behind in decoding, or may be struggling more broadly; the screener cannot tell you which. Reading achievement and cognitive ability are correlated, but a fluency probe yields no IQ score and is not normed as a measure of intelligence.

It is also not a diagnostic tool. The publisher's own Outcomes-Driven Model builds this in: after the benchmark screen flags a student, the next step is to validate the need for support by retesting with alternate forms or additional diagnostic assessments. The publisher describes RAN as a measure educators can use as part of screening for reading difficulties such as dyslexia, and screening estimates risk only. Determining whether a child has dyslexia or another learning disability requires a comprehensive evaluation by qualified professionals, typically including individually administered reading measures such as the GORT-5 along with cognitive, language, and phonological testing.

Two limitations follow from the design. The one-minute format is efficient, but each score carries measurement error, and the publisher advises reading patterns across measures alongside other information rather than any single number. The National Center on Intensive Intervention also notes that the tool is not appropriate for students learning to read in a language other than English, for deaf students, or for students with fluency-based speech disabilities such as stuttering. On the positive side, a 2009 meta-analysis of curriculum-based oral reading measures found a strong overall correlation with standardized tests of reading achievement across grades one through six.

A parent reading an Acadience Reading report should treat it as a snapshot of specific reading skills against a grade-level target, updated three times a year, with the Reading Composite Score as the headline and the individual measures as the detail.

Questions about reasoning, memory, or processing speed call for a different instrument. For adults aged 18 and over, the Reasoning and Intelligence Online Test, developed by RIOT IQ with psychometrician Dr. Russell T. Warne, measures 15 subtests across six cognitive indices: verbal reasoning, fluid reasoning, spatial ability, working memory, processing speed, and reaction time. It takes about 52 minutes and reports scores on the mean-100, standard-deviation-15 scale. Like a classroom screener, it does not replace an individually administered diagnostic evaluation. Adults who want a normed picture of their own cognitive abilities can take the RIOT IQ test.

Acadience Reading K-6 is the current name of the assessment formerly published as DIBELS Next. The DIBELS trademark now belongs to the University of Oregon, which publishes a separate DIBELS 8th Edition.

No. It measures taught reading skills against grade-level benchmark goals. It produces no IQ score and is not normed as a measure of general cognitive ability.

No. It is a screening and progress monitoring tool that flags students who may be at risk for reading difficulties. A diagnosis requires a comprehensive evaluation by qualified professionals.

All students are assessed three times a year, at the beginning, middle, and end of the school year, on grade-level material. Students receiving extra support may be progress monitored as often as weekly.

It combines the measures that best predict later reading outcomes at a given grade and time of year, and the publisher recommends interpreting it first. Because its ingredients change, it is not designed for comparing growth across grades.

Each measure is timed at one minute, with Retell adding up to one more minute after ORF. The National Center on Intensive Intervention lists about five minutes per student.

1. Acadience Learning. (2026). What is Acadience Reading K-6?. acadiencelearning.org

2. Acadience Learning. (2021). Acadience Reading K-6: Benchmarks and composite score [PDF]. acadiencelearning.org

3. Acadience Learning. (2026). Acadience Reading K-6 and the Outcomes-Driven Model.. acadiencelearning.org

4. National Center on Intensive Intervention. (n.d.). Academic screening tools chart: Acadience Reading K-6 (aka DIBELS Next). American Institutes for Research. charts.intensiveintervention.org

5. University of Oregon Center on Teaching and Learning. (n.d.). About DIBELS.. dibels.uoregon.edu

6. Kaminski, R. A., & Good, R. H. (1996). Toward a technology for assessing basic early literacy skills. School Psychology Review, 25(2), 215-227. doi.org

7. Reschly, A. L., Busch, T. W., Betts, J., Deno, S. L., & Long, J. D. (2009). Curriculum-based measurement oral reading as an indicator of reading achievement: A meta-analysis of the correlational evidence. Journal of School Psychology, 47(6), 427-469. doi.org

8. National Institute of Child Health and Human Development. (n.d.). National Reading Panel.. nichd.nih.gov

Hero photo: Children reading books together, seen from above. Photo by Kulttuurinavigaattori, via Wikimedia Commons, licensed under CC BY-SA 4.0 (cropped).