Progress Monitoring Tools Compared: Four Systems, Four Rules
You have a student on your caseload, a goal written, and an intervention running. You want a number every week or two that tells you whether it is working. So you go looking for a progress monitoring tool, and within an hour you have found four that practitioners in school buildings use constantly: DIBELS 8th Edition, Acadience Reading, easyCBM and aimswebPlus.
Two of them appear to be free. That is where the trouble starts.
The two free ones publish their materials under an educational use agreement that names schools, school districts and multi-district agencies as the permitted users. You are none of those.
Once you get past access, a second problem arrives. The four systems do not agree on how often to test, on how many points below the line means change something, or on where the line starts. A number produced under one system's rules does not mean what it means under another's.
This is a map of what each system actually is, what its own documentation says about using it, and what changes when your practice is not a district.
Nothing here is legal advice. Licence terms are contracts, and the only reliable reading of the one that applies to you is the one you get from the publisher, or from your own attorney.
The two free systems are licensed to schools, not to practitioners
Start with the thing nobody mentions in the Facebook groups.
The University of Oregon publishes the complete DIBELS 8th Edition materials — scoring booklets and student materials for benchmark and progress monitoring, kindergarten through eighth grade — on its testing materials page, at no charge. The FAQ is explicit that if you want to use it "as a paper/pencil screening/benchmark assessment with no data system," you "can download all the testing materials from our materials page for free."
The download is governed by a Materials Download Educational Use Agreement. Its permitted-user sentence reads:
Schools, school districts and multi-district agencies may use the DIBELS Materials solely for internal educational use.
It also states that "No DIBELS Materials may be sold," that your use does not place the materials in the public domain, and that "No rights to modify DIBELS Materials or use of the trademark are granted except as agreed to in advance and in writing." The materials are offered "as a research courtesy," without warranties.
Acadience does the same thing in nearly the same words. Its Educational Use Agreement, presented at the materials download site, says:
Schools, school districts, and multi-district agencies may themselves make unlimited photocopies of the Acadience assessment materials for internal educational use.
No Acadience materials "may be sold or licensed without the express written consent of ALI," they must be used without modification, and Acadience Learning "requires all users to register on the host website designated by ALI, to evidence their assent to the terms of this Educational Use Agreement." Registering is the act of agreeing.
Read both sentences again and notice what they do and do not do. Neither says a private practitioner may not use the materials. Neither mentions independent practitioners at all. The permitted-user list is a list of institutions, and an educational therapist in solo practice is not on it. That is a different situation from being prohibited, and it is also a different situation from being covered.
What follows from that is a question for the publisher, not for a blog. Both organisations answer email. If you are building a caseload-wide monitoring routine on either system, the two minutes it takes to ask whether an independent practice is a permitted user is the cheapest insurance in your whole assessment stack.
It belongs on the same list as the other paperwork questions a private practice has to settle for itself, because there is no district office to have settled it already.
DIBELS and Acadience are the same lineage and not the same instrument
This confuses everyone, including people who administer both.
DIBELS began at the University of Oregon in the early 1990s, out of Ruth Kaminski's doctoral work with Roland Good as her advisor, as the administration and scoring guide recounts. Good and Kaminski later published DIBELS Next through their own company. That company renamed the assessment, and DIBELS Next became Acadience Reading.
Meanwhile the University of Oregon kept the DIBELS name and built a new edition on it. So there are now two current instruments descended from the same measures, published by two organisations, under two names, with two sets of benchmarks.
The National Center on Intensive Intervention makes the lineage unusually visible: on its tools charts the entry is literally titled "Acadience Reading K-6 (aka DIBELS Next®)".
One more piece of the picture, because it changes who you are dealing with. In a release datelined Oxford, Massachusetts, 6 June 2024, Wilson Language Training announced its acquisition of Acadience Learning, "the company founded by Dr. Ruth Kaminski and Dr. Roland Good," described as "the original authors of the early literacy assessment DIBELS, now known as Acadience."
The release states that "Both Acadience and Wilson will continue to operate under their current brands, with no customer support or product changes for educators, districts, or states." Acadience's commercial distribution partnership with Voyager Sopris Learning, expanded in 2019, is a separate arrangement and is why the NCII chart lists two vendors for the same measure.
Wilson's own announcement page says existing curriculum and assessments "will both remain available as independent resources," and that Acadience customers continue on the Acadience Learning Online platform through existing support channels.
So the measure that is most often used to judge whether a structured literacy program is working is now owned by a structured literacy publisher. That is not an accusation. It is a fact about the field's ownership map, and if you compare programs for families — as our reading intervention program comparison does — you should know it.
What each of the four systems actually is
Before the rules, the objects.
DIBELS 8th Edition
Published by the Center on Teaching and Learning at the University of Oregon. Measures for grades K through 8: Letter Naming Fluency, Phonemic Segmentation Fluency, Nonsense Word Fluency, Word Reading Fluency, Oral Reading Fluency and Maze. Paper materials free to download; data management through the DIBELS Data System and mCLASS, operated by Amplify as the University's development partner.
The manual states three principal uses: screening up to three times a year, documenting progress under intervention, and setting benchmark goals. It also says plainly what the test is not for — "It has not been designed to render judgments regarding teacher effectiveness or school progress" — and that although DIBELS 8 can be used for off-grade assessment, "it has not been validated for this use."
The University no longer trains administrators directly. Its FAQ says "We no longer provide training directly from the University of Oregon," and routes users to certified trainers and to Amplify's courses, with its own learning hub carrying scoring practice materials.
The technical case for the edition sits in a separate technical manual and a later supplement, which is where reliability and validity evidence lives rather than in the administration guide. Spanish administration directions are published separately, in a 2025 edition.
Acadience Reading K-6
Published by Acadience Learning. First Sound Fluency, Phoneme Segmentation Fluency, Nonsense Word Fluency, Oral Reading Fluency and Maze, with twenty alternate progress monitoring forms per measure, arranged by skill rather than by grade. The progress monitoring guidelines note that while benchmark assessment uses three ORF passages, "a single passage is sufficient for progress monitoring."
Materials are photocopy masters under the educational use agreement above; data management through Acadience Learning Online, with a published version distributed commercially. Training runs through Acadience's own workshops, and the full procedures sit in the assessment manual.
The family extends past K-6. Acadience Reading 7-8 and Acadience Math are separate instruments with their own manuals and chart entries, and the Buros Center's test review of Acadience Reading 7-8 is the kind of independent read that is worth knowing exists when a school questions your instrument.
easyCBM
Built by the Behavioral Research and Teaching unit in the College of Education at the University of Oregon, beginning with an Office of Special Education Programs grant in 2006 and continued under Institute of Education Sciences funding. Reading, mathematics and Spanish literacy, kindergarten through grade 8.
This is the only one of the four designed around an individual account. The Teacher Edition user's manual says easyCBM "is available through both a Teacher Edition, which is intended for individual teachers, and a District Edition." New Teacher Edition users get a one-month trial of the paid Deluxe tier, after which "your account will revert to easyCBM Lite," retaining students and data with a reduced feature set.
The reduced feature set matters more than it sounds. Per Behavioral Research and Teaching's own comparison, benchmark assessments are a Deluxe feature. The free tier gives you progress monitoring forms; it does not give you the screening measures that would tell you where the student started relative to the norm group.
BRT's product page, its getting-started guide and the public FAQ are the documentation set worth reading before you open an account, because the tier boundaries are not visible from inside the product until you hit one.
aimswebPlus
Pearson's subscription system. Its product overview describes "nationally-normed, skills-based benchmark assessments and progress monitoring integrated into one application" across reading and math for PreK through grade 12, with add-on measures for dyslexia screening and behaviour. It reports growth percentiles and rate-of-improvement data against a national sample.
It is sold as an annual purchase with a stated minimum initial order, which is the part that rules it out for most solo practices — not the per-student rate. And it carries Pearson qualification levels, assigned per item rather than per family: the overview page describes core reading and math subscriptions at Level A with certain add-ons at Level B, and the store listing carries a level against each item.
If that vocabulary is unfamiliar, our piece on achievement test qualification levels maps what each publisher's letters actually require. The short version applies here too: check the level printed on the specific item you are ordering, against Pearson's qualifications policy, rather than assuming the family-level answer.
A benchmark is not a percentile, and a percentile is not a benchmark
Here is where cross-system comparison quietly breaks.
Acadience benchmarks are odds statements. Students at or above the benchmark "have the odds in their favor (approximately 80%–90%) of achieving later important reading outcomes." Below the cut point for risk, students "are unlikely to achieve subsequent goals without receiving additional, targeted instructional support."
DIBELS 8 uses three cut-scores — risk, benchmark and an ambitious goal — validated against a different criterion. Students at or above the ambitious cut are "at truly negligible risk of scoring below the 40th percentile rank on a criterion reading measure at the end of the school year," where negligible means 0 to 10 percent of them.
easyCBM is normative from the start. Its manual instructs you to "refer to the percentile rank associated with a given raw score at the time of year the measure was administered," based on "national norms, which are re-calculated and updated every five years," with the 50th percentile read as average for that grade at that point in the year.
aimswebPlus reports national norms plus growth percentiles, comparing a student's progress against similar students in a national sample.
Four reference points, four questions answered:
Acadience: what are the odds this student reaches a later reading outcome?
DIBELS 8: how confident can we be this student will clear the 40th percentile on an external measure by June?
easyCBM: where does this student sit in a national distribution right now?
aimswebPlus: how does this student's growth compare with similar students nationally?
None of those is the same claim. So "at benchmark" in one system and "50th percentile" in another are not translations of each other, and a student can be one without being the other.
When you switch systems mid-caseload, the graph does not continue. It restarts.
Four systems, four monitoring frequencies
Now the schedules. All four publishers state one. No two match.
DIBELS 8 says that "in general, the more foundational the skill and the more intensive the intervention, the more frequent progress monitoring should be," then immediately adds the sentence people miss: "it is rarely advisable to progress monitor more than once a week."
For students at risk, it recommends every two weeks in kindergarten through third grade, every two to three weeks in grades 4 and up, and every four weeks — four to five in the upper grades — for students at some risk receiving strategic support. Maze is different: no more than once to twice between benchmark periods.
Acadience is more frequent at the intensive end. For students in the Below Benchmark range, "monitoring one or two times per month is likely sufficient." For students Well Below Benchmark, "progress monitoring once per week is ideal, though once every other week may be sufficient." Anyone monitored in out-of-grade material: once per week ideal. Maze: once per month.
easyCBM sets its schedule by measure rather than by risk level. Phoneme Segmenting and Letter Sounds every one to two weeks; Word Reading Fluency every two weeks; Passage Reading Fluency, Vocabulary and the comprehension and math measures no more frequently than every three to four weeks, "because it takes longer for improvements to take hold and be reflected on test performance."
That last one is worth sitting with, because it cuts against a habit. DIBELS 8 names Nonsense Word Fluency and Oral Reading Fluency as "the strongest measures for capturing change over time" and steers you toward them. easyCBM puts its passage-level fluency measure in the slowest tier it publishes. Same construct, opposite scheduling advice, both from the University of Oregon.
For contrast, the federal guidance sits lower than any of them. The IES practice guide Assisting Students Struggling with Reading recommends monitoring tier 2 students "at least once a month" — and that recommendation carries the lowest evidence tier the guide awards, labelled "low" in the 2009 document and displayed as "minimal" on the current site.
The IRIS Center's data-based individualization module says that for severe and persistent learning difficulties, data "should be collected at least once a week, and more often if feasible." Its reading progress monitoring module puts the working range at "weekly or twice weekly," with once per month as the floor.
Once a month to once a week, depending on whose page you have open.
Four systems, four decision rules
The frequency question is the easy one. The hard one is when a flat graph obliges you to change something.
DIBELS 8 sets an end-of-year goal — usually the end-of-year benchmark cut-score — and draws the aimline "from the benchmark result that occasioned intervention to the end of year goal." Then: "if a student obtains four consecutive data points below the aimline, it indicates the need for either a change in intervention or, in Grades 1 and up, the potential need for off-grade level monitoring."
Oral Reading Fluency is the exception. "Due to the exceptional reliability of ORF and its more frequent use in upper grade levels, only three data points below the aimline are required."
Acadience uses three, everywhere: "if three consecutive data points fall below the aimline, the team should meet and make a considered decision about maintaining or modifying the instruction." Its graphs work from a moving median of the three most recent points rather than from the raw sequence.
easyCBM draws its aimline differently again. The manual says that once a student has been tested three times, an aim line appears "starting with the median of the first three scores and ending with the goal that has been set."
So the DIBELS 8 line starts at the screening score that triggered intervention, and the easyCBM line starts at the median of your first three monitoring probes. Those are different lines through different points, and they will disagree about the same student.
NCII's own decision rules guidance sets a higher data bar than any of the three: for the four-point rule, "If at least three weeks of instruction have passed and six data points have been collected, examine the four most recent data points." For a trend-line or median-of-last-three decision, "at least four weeks… and eight data points."
Its goal-setting handout adds a third layer, offering three ways to set the goal the aimline runs to — benchmarks, national rate-of-improvement norms, and an intra-individual framework that "requires collection of six to nine data points before setting the goal." Monitoring is step two and step five of data-based individualization, which NCII is careful to describe as "a process, not a specific program or product."
Four sources, four rules. Three points, four points, four points unless it is ORF, and six-points-then-look-at-four.
The rule you use is not a property of the student. It is a property of the manual you happened to open. Say which one you used, in writing, before you use it.
None of this makes any of them wrong. Each rule is calibrated to that system's forms, its error, its growth expectations. The mistake is treating the rule as a fact about progress monitoring in general, and it is a mistake that survives a long way into a practitioner's career.
Where the systems agree, which is worth noticing
The disagreements are the news, but the agreements are the practice.
All four assume a stable, standardised administration, scored the same way every time — the discipline Stanley Deno set out when he described curriculum-based measurement as an alternative to published achievement testing in 1985.
DIBELS 8's caution on this is the sharpest published statement in any of the four manuals. Inter-rater reliability obtained in a research study "has no bearing on the use of a measure in schools other than the fact that it suggests high inter-rater reliability is possible to achieve."
Reliability across raters "cannot be assumed and should be established in the specific context in which DIBELS 8 is to be used," with recalibration "at least once a year."
Read as a solo practitioner, that is a problem statement. You are the only rater. There is no one to calibrate against, and no annual drift check unless you build one — a recorded administration scored twice, weeks apart, or a colleague who scores the same sample.
All four also decline to monitor with letter naming. DIBELS 8: "LNF should never be used for progress monitoring." Acadience simply publishes no LNF progress monitoring materials, "because letter naming is not considered an essential early literacy and reading skill."
And all four put the monitored skill where the instruction is. DIBELS 8: "In no situation should student progress be monitored with a subtest on which they did not demonstrate risk." Acadience: students "should be monitored in material that matches the skill area targeted for instruction."
That is the same alignment principle that runs through the Taxonomy of Intervention Intensity, where alignment is one of seven dimensions alongside dosage, and which rests on Fuchs, Fuchs and Malone's 2017 framework. It is the one rule in this whole area that transfers cleanly between systems.
What raw scores do and do not carry
A words-correct-per-minute figure looks like the most portable number in the field. It is not.
The DIBELS 8 manual explains why, in an example worth memorising. A student scores 100 words correct per minute at the beginning of the year and 120 at the middle.
The student "has indeed read the middle of year passage at a faster rate, but whether the difference in 20 WCPM is due to actual growth or the middle of year passage simply being easier to read remains unclear." Form effects are mild on constrained measures and "more apparent in subtests involving connected text."
This is why DIBELS 8 offers five score types — raw scores, equated scaled scores, percentile ranks, growth zones and composite scores — and steers progress decisions toward the equated ones for connected-text measures.
easyCBM handles the same problem by instruction rather than by equating: its manual tells you to "use percentile ranks, rather than raw scores, to compare performance between benchmark and progress monitoring forms for the math measures."
For your practice, three consequences:
Administer progress monitoring forms in order, as both Acadience and easyCBM instruct, rather than choosing the one you have to hand.
Do not compare a WCPM figure from one system against a norm table from another. They are not the same passages.
When a parent forwards a school WCPM score, ask which system produced it and at what point in the year, before you plot it next to yours.
Off-grade monitoring, where the systems part company again
Sooner or later you will have a student for whom grade-level material yields nothing but floor scores.
DIBELS 8 sets a numeric trigger: for grade 1 through 8 students who begin the year at or below the 10th percentile on national DIBELS 8 norms, consider off-grade-level forms, moving down a grade at a time by the same criterion.
It then adds a discipline that is easy to skip: "For benchmarking students, always use on-grade-level forms regardless of whether their progress is monitored with off-grade-level forms," with an on-grade progress monitoring form administered "every 4 to 6 weeks."
easyCBM uses the same threshold from the other direction. Its manual says the measures are most informative when scores fall in the 10th to 49th percentile range, and that a student scoring below the 10th percentile on grade-level Passage Reading Fluency should drop back a grade.
Acadience defines the optimal level by performance rather than by percentile: the highest level of material where the student reads with at least 90 percent accuracy and scores above 20 words correct in first-grade material, 40 in second-grade, or 50 in third- through sixth-grade material.
Then Acadience does something none of the others do. When monitoring below grade level, it instructs you to set the goal at the end-of-year benchmark for the level being used, and to "set the timeframe so that the benchmark is achieved in half the time in which it would normally be achieved."
The stated intent is "to establish a goal that will accelerate progress and support a student to close the achievement gap between them and their grade-level peers."
That is a materially more ambitious goal than DIBELS 8's, for the same student, on nearly the same measures. If you are writing goals, this is the difference between a plan that looks reasonable and a plan that looks aggressive — and the treatment plan mechanics do not tell you which to choose. The manual you picked does.
What NCII's chart rates, and the column that is almost always empty
The Academic Progress Monitoring tools chart is the closest thing to an independent review in this area, and it is widely misread.
It rates individual studies, not products. The user's guide says the study quality ratings "do not say anything about the results of the study; they do not present any assessment of whether the study provided evidence of program effectiveness."
It adds that "the tools chart provides ratings on individual studies of programs, not holistic ratings of the programs themselves," and that "The charts are not intended to endorse any program or tool, or to compare programs or tools to one another." Ratings read convincing, partially convincing, unconvincing, or data unavailable.
With that framing firmly in place, look at what is actually posted for three of our four, as of 18 September 2026.
For easyCBM Proficient Reading, grades 3 through 8: reliability rated unconvincing at every grade; validity ranging from partially convincing to convincing; rates of improvement and decision rules both listed as data unavailable throughout.
For Acadience Reading K-6 Maze, grades 3 through 6: reliability unconvincing at every grade; validity varying by grade from unconvincing to convincing; bias analysis not provided; decision rules data unavailable.
For aimswebPlus Math Number Sense Fluency, grades 2 through 8: reliability unconvincing; validity convincing; reliability of slope convincing; validity of slope unconvincing; and both decision-rule categories — setting and revising goals, and changing instruction — unconvincing.
Notice the pattern rather than the individual cells.
The decision rules column, the one that corresponds to the rules we just spent a section comparing, is the emptiest column on the chart. Publishers publish a rule. The evidence posted for that rule is thin or absent.
The broader federal picture is no stronger. The IES practice guide on using student achievement data to support instructional decision making rates all five of its recommendations at its lowest evidence level.
That is not a reason to stop using decision rules. Working from a published rule beats working from a hunch, and the alternative is worse. It is a reason to describe the rule as a convention you adopted rather than as a threshold the research established — and it is the same distinction we drew about evidence labels in our piece on what "Orton-Gillingham based" actually means.
DIBELS 8 is on the screening chart, not the progress monitoring chart
One more thing the chart shows, and it surprises people.
As of 18 September 2026, "DIBELS 8th Edition" does not appear among the tools listed on NCII's Academic Progress Monitoring chart. It does appear on the Academic Screening chart, as do its individual measures. Acadience Reading K-6, easyCBM, aimswebPlus Reading and aimswebPlus Math are all listed on the progress monitoring chart.
Bound that correctly, because it is easy to overstate. It means the tool is not currently posted on that chart. It does not mean NCII reviewed DIBELS 8 for progress monitoring and rejected it, and it does not mean the measure is unsuitable — NCII's own charts, remember, are not built to compare tools to one another. Submission to the chart is something a vendor does.
But the practical reading stands. If your rationale for choosing an instrument is "it is on the NCII progress monitoring chart," DIBELS 8 does not currently satisfy that rationale, and Acadience, easyCBM and aimswebPlus do. If your rationale is the manual's own technical documentation, DIBELS 8 publishes a great deal of it.
When several organisations share a vocabulary
This is the fourth time this pattern has turned up on this site, and by now it is a working assumption rather than a finding.
Publishers of achievement tests use letters to describe purchasing eligibility, and the same test sits at different letters in different storefronts. Programs describe themselves as evidence-based, and the phrase means four different things depending on who is auditing. Organisations specify a dosage, and almost none of them mean the same unit.
Credentialing bodies count supervised hours, and six bodies produce six different units. Executive function curricula share a name across four genuinely different kinds of object, and the instruments that assess the construct do not agree on who supplies the data. Math intervention has no dyscalculia equivalent of the structured literacy ecosystem, and writing intervention splits along two incompatible definitions of dysgraphia.
Progress monitoring is the same shape. Aimline, benchmark, decision rule and adequate progress are all shared words carrying different operational definitions, and nobody adjudicates between them.
The professional move is not to pick the right one. It is to name which definition you are working from, in the document, where a parent or a school can read it.
Administering is not interpreting
A boundary worth restating, because curriculum-based measures feel casual in a way that a norm-referenced battery does not.
These are one-minute probes you can learn to administer accurately in an afternoon. That ease is real, and it does not expand your scope.
The DIBELS 8 manual is unambiguous: "no single test should drive high-stakes decisions made about individual students," and "DIBELS 8 is not a diagnostic measure in the sense that it cannot diagnose the root causes of reading problems," though a full set of within-grade subtests "can lead to strong hypotheses."
Hypotheses are exactly what these measures produce. Not identifications.
The AET Code of Ethics points the same direction at II.I.D, directing the educational therapist to seek interpretation from professionals in related fields where interpretation is called for. The AET Fact Sheet puts the harder limit on the adjacent activity, listing among things educational therapists do not do: "administer cognitive, intelligence, or psychological tests (unless otherwise qualified to do so)."
Can you use six weeks of Oral Reading Fluency data to tell a family a student has dyslexia? No. What that data can do is document whether the instruction you are providing is producing change, which is the question you were actually hired to answer.
The scope map for the role works through where that boundary sits in more detail, and our comparison of the three roles covers how it differs for a learning specialist or an executive function coach. The IDA Knowledge and Practice Standards put progress monitoring with curriculum-based measures, graphing included, at standard 3.5 — a competence expected of a reading teacher, distinct from the diagnostic standards around it.
Where progress monitoring becomes part of a special education eligibility decision, Acadience states the requirement directly: "appropriate informed consent procedures should be followed." That is a school process with its own rules, and when your data enters it, it stops being only yours.
A sequence for choosing, not a recommendation
Four factual questions, in this order. The answer to each narrows the field without anyone telling you which tool to buy.
Is your practice a permitted user under the agreement? For the two free systems, the permitted-user list names institutions. Ask the publisher before you build a routine on it.
Can you obtain the tool as an individual at all? easyCBM's Teacher Edition is designed for one teacher and one class list; aimswebPlus is an annual purchase with a minimum initial order and item-level qualification requirements.
Does the free tier include what you need? easyCBM Lite gives progress monitoring without benchmark assessments, so you get a slope with no normative starting point.
Which subject and grade band do you actually monitor? Acadience Reading K-6 stops at grade 6 and DIBELS 8 runs to grade 8; easyCBM covers reading, math and Spanish literacy to grade 8; aimswebPlus runs PreK to 12 and carries math throughout.
What will the receiving audience accept? A school team, an independent evaluator and a family have different expectations of what counts as documentation, and the answer shapes which system is worth the setup.
Then commit. Switching systems mid-year costs you the graph, and the graph is the product.
What to do at intake
Practical, and most of it costs nothing.
Establish a baseline before the intervention starts, not after. IRIS's guidance is three probes within a week or so, taking the median, which is also how easyCBM builds its aim line and how Acadience reads its moving median.
Pick the measure to match the skill and the grade, not the one you own. IRIS's reading module maps the standard progression — letter sound fluency in kindergarten, word identification fluency in first grade, oral reading fluency from mid-first through sixth, maze from fourth — and its mathematics module does the same for computation and concepts-and-applications probes. NCII publishes an intervention plan template that holds all of it in one page.
Write the rule down in the plan. Which system, which measure, which form order, which frequency, which decision rule, and what happens when the rule fires. The first session is the natural place to set it, and a plan with a stated decision rule reads differently to a school team than a plan with a graph.
Build your own calibration check, since no one else will. Record an administration, score it live, score it again a month later from the recording, and compare.
Tell families what the number is and is not, at the start, in one sentence. It measures whether this instruction is moving this skill. It does not diagnose, it does not predict, and it is not a grade — DIBELS 8's own documentation says its scores should never be used to grade students.
And keep the monitoring schedule inside what your session frequency can actually support. A weekly practice that owes the student forty minutes of instruction cannot spend eight of them probing, which is the same arithmetic problem as the gap between published dosage and what a weekly practice delivers.
Where the published record runs out
Several things in this area are simply not publicly documented, and it is more useful to say so than to fill the gap.
Neither DIBELS's nor Acadience's public educational use agreement addresses independent practitioners as a category. The permitted-user lists name institutions, and the agreements are silent on solo practice rather than restrictive about it. What that silence means for your practice is a question for the publisher, and both will answer it in writing if you ask.
Pearson assigns qualification levels per item. Its aimswebPlus overview page describes core reading and math subscriptions at Level A with certain add-ons at Level B, and the product listings carry their own levels. We could not load the full item-by-item listing on two attempts from this network, so we are not publishing a per-item table. Check the level shown on the item you are ordering.
We did not find public documentation of how the two free systems audit compliance with their educational use agreements, or whether they have ever needed to.
easyCBM's account creation asks for an email address, a first name and a last name, with no school affiliation field visible in its published help documentation as of 18 September 2026. That is a description of a sign-up form, not a statement of policy, and the absence of a field is not a permission.
The DIBELS 8 manual contains one internal inconsistency worth knowing if you cite it. The section on choosing a subtest says Maze progress monitoring is supported "up to thre to four times between benchmark occasions" — the typo is in the original.
The frequency section two pages later recommends "no more than once to twice between benchmark periods," and Table 4.1 lists up to two. If you need to justify a Maze schedule in writing, cite the table.
Finally, the field has no cross-system equating study we could locate that would let you convert a score in one of these systems into a score in another. Practitioners ask for one constantly. If it exists, it is not published anywhere we could find as of September 2026.
Frequently asked questions
Can an educational therapist in private practice use DIBELS 8 or Acadience?
Both publishers distribute materials under an educational use agreement whose permitted-user list names schools, school districts and multi-district agencies. Neither agreement addresses independent practitioners as a category. Ask the publisher directly before building a caseload routine on either, and keep the answer.
Which progress monitoring tool is best for a private caseload?
That question has no source-based answer, and anyone who gives you one is guessing. What the published record supports is a sequence: check permitted use, check whether an individual can obtain it, check what the free tier includes, then match subject and grade band. Commit to one system and stay in it.
How often should I progress monitor?
It depends on the system you chose. DIBELS 8 says it is rarely advisable to monitor more than once a week and recommends every two weeks in K-3 for at-risk students. Acadience says weekly is ideal for students well below benchmark. easyCBM schedules by measure, with passage-level fluency no more often than every three to four weeks. The IES reading practice guide recommends at least monthly, at its lowest evidence tier.
How many data points below the aimline means I should change something?
Again, system-dependent. Acadience says three consecutive points below the aimline. DIBELS 8 says four, or three when the measure is Oral Reading Fluency. NCII's four-point rule asks for six data points and three weeks before you examine the four most recent. State which rule you are using in the plan.
Do these tools identify dyslexia?
No. DIBELS 8's manual states that it "is not a diagnostic measure in the sense that it cannot diagnose the root causes of reading problems," and that a full set of subtests can support hypotheses, which are then tested with other measures and observations. Identification is a different process with different instruments and, usually, different professionals.
Are Acadience and DIBELS the same thing?
They share an origin and are now separate products. DIBELS Next was renamed Acadience Reading; NCII's chart still lists it as "Acadience Reading K-6 (aka DIBELS Next®)." The University of Oregon separately publishes DIBELS 8th Edition. Different benchmarks, different decision rules, different publishers — and since June 2024, Acadience Learning has been part of Wilson Language Training.
Can I use a school's DIBELS scores in my own progress monitoring?
You can read them, and you should ask which edition and which time of year produced them. You cannot assume they sit on the same scale as scores you collect in another system, and form effects mean even within-system raw scores across times of year need care. Ask for the report rather than the number.
If you are building a practice on this kind of decision — which measure, which rule, which documentation a school will actually accept — the work goes better with people to compare notes with.
Join the Illuminate educator list for practitioner-facing resources on assessment, scope and practice operations, written for the people doing the work.
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