Spelling Assessment Tools: What Each One Can Diagnose
You can give a student a spelling test on Monday and know by Monday afternoon either how far behind they are or what to teach them on Wednesday. You will not know both. That is not a failure of your test selection. It is how the spelling assessment tools on the market are actually built, and the publishers say so themselves in language most of us never read.
The split runs straight down the middle of the category. One family of instruments is norm-referenced: it dictates a list of words, counts the ones you get right, and converts the count into a standard score against a national sample. The other family is criterion-referenced: it probes the specific linguistic knowledge behind the errors and hands you an instructional sequence, with no score to put in a report.
Both are sold under the same two words. Neither is a diagnosis.
Two questions, two kinds of instrument
The confusion starts with the word "diagnostic," which does two different jobs in our field and nobody flags the switch.
In psychometrics, a diagnostic instrument is one whose scores support a classification decision — this student does or does not meet a criterion. In literacy instruction, a diagnostic assessment is one that tells you what to teach next. The first needs norms. The second needs a theory of what spelling knowledge is made of.
Almost no instrument does both well, because the design choices pull apart. To norm a test you need a scoring rule that is fast, objective and identical for every examinee, which in practice means marking a whole word right or wrong. To tell a practitioner what to teach you need to look inside the word, at which part of it failed and why, and that judgement is slow and resists standardisation.
A whole-word scoring rule is what makes a spelling test normable. It is also what makes it instructionally silent.
This is the same structural problem written expression assessment runs into, and the same one that makes reading comprehension scores disagree with each other. Spelling is the cleanest case, because the construct is small enough that you can see the whole seam at once.
The TWS-6 states its own three purposes, and none of them is "tell me what to teach"
The Test of Written Spelling, Sixth Edition is the instrument most practitioners picture when they hear the phrase. It is published by PRO-ED, dated 2026, and authored by Donald D. Hammill, Louisa C. Moats, Melissa E. Morey and Stephen C. Larsen. Ages 6-0 through 18-11, twenty minutes, individual or group administration.
It uses a dictated-word format. Two forms, A and B, each with fifty words "drawn from eight basal spelling series and graded word lists." It reports "percentiles, standard scores, and age and grade equivalents," and its norms rest on "an all-new sample of 1,606 students from 421 different zip codes."
Now read what PRO-ED says the results are for. Three purposes, verbatim:
"to identify students whose scores are significantly below those of their peers and who might need interventions designed to improve spelling proficiency, to document overall progress in spelling due to intervention programs, and to serve as a measure for research efforts designed to investigate spelling."
Identify. Document progress. Support research.
What that list leaves out
There is no fourth purpose about instructional planning, no claim to identify a disorder, and no claim that the score tells you which spelling patterns a student has or has not internalised. The publisher is being precise, and the precision is doing real work.
If a report you write leans on a TWS-6 standard score to justify a particular scope and sequence, you have used the instrument for a purpose its own publisher does not list. That is not a scandal. It is simply a validity argument you now have to make yourself, from something other than the score.
One further detail worth your attention: the TWS-6 reports grade equivalents, and grade equivalents are the score type whose published cautions are most routinely stripped away in transit. If you report one, report it the way the publishers themselves describe grade equivalent scores, not the way a parent will hear it.
The TOC-2 breaks orthography into six tasks, and one comparison is worth the price of admission
The Test of Orthographic Competence, Second Edition takes a different route. Authored by Nancy Mather, Rhia Roberts, Donald D. Hammill and Elizabeth A. Allen, it covers ages 8-0 through 24-11 in thirty to forty minutes and was normed on 1,512 individuals.
PRO-ED describes it as assessing "aspects of the English writing system that are integral to proficient reading and writing," naming "letters, spelling, punctuation, abbreviations, and special symbols." Six subtests:
Punctuation. The student edits unpunctuated printed sentences.
Abbreviations. The student writes out what printed abbreviations mean.
Sight Spelling. The examiner says a word, the student sees it partly written with an irregular element missing, and fills in the missing letters.
Homophone Spelling. The examiner says a word, the student sees a picture, and spells the homophone the picture represents.
Word Scramble. Three minutes to rearrange scrambled letters into real words.
Letter Choice. Two minutes to supply the missing one of p, d, b or q.
Those roll up into five composites: Orthographic Knowledge, Conventions, Spelling Accuracy, Spelling Fluency and Spelling Efficiency.
The accuracy-against-fluency comparison
The useful part is a contrast PRO-ED spells out on its own page. Spelling Fluency, built from the two timed subtests, "can be compared to the Spelling Accuracy composite to determine whether a student has developed accurate orthographic images but does not process these visual images quickly or automatically."
That is a within-student comparison between two normed composites, and it answers a question practitioners actually have about adolescents who spell correctly on an untimed probe and fall apart in a timed essay. It is still not an instructional plan. But it is a good deal closer to a usable hypothesis than a single spelling standard score.
Note also the age ceiling. The TOC-2 runs to 24-11, which is unusual in this area and makes it one of the few options for the college-age and adult end of a caseload.
The spelling subtests inside the achievement batteries
Most educational therapists do not buy a standalone spelling test. They read a spelling subtest score out of a battery somebody else administered, which is its own skill — and the subject of what you may actually do with a psychoeducational report.
WIAT-4
The Wechsler Individual Achievement Test, Fourth Edition, published by Pearson in 2020, covers ages 4:0 to 50:11. Its Spelling subtest feeds two different composites: Written Expression and Orthographic Processing.
That dual placement is the interesting part. The same raw performance is treated once as a writing skill and once as a processing index, depending on which composite you read. The WIAT-4 also added Orthographic Fluency, which measures speed of irregular word reading, and Orthographic Choice, which Pearson describes as measuring "recognition spelling skills" — spelling tested by choosing rather than producing.
Pearson lists the test's uses as supporting "diagnoses of specific learning disabilities; Academic program placement; Intervention planning; Dyslexia screening/evaluation." Note that intervention planning appears there, at the level of the whole battery, not at the level of the Spelling subtest.
KTEA-3
The Kaufman Test of Educational Achievement, Third Edition, is the battery that went furthest toward making error patterns reportable, and it deserves its own section below.
WJ V
Riverside Insights' Woodcock-Johnson V carries two spelling-relevant tests, and its own CHC classification document makes the distinction visible in a way the other batteries do not.
Spelling is classified broad Reading and Writing (Grw), narrow Spelling Ability (SG). The task: "Working in a Response Booklet, the examinee writes words that the examiner dictates orally."
Spelling of Sounds is classified broad Auditory Processing (Ga) and Reading and Writing (Grw), narrow Phonetic Coding (PC) and Spelling Ability (SG). The task: "the examinee writes single letters that represent one sound. For later items, the examinee writes increasingly difficult nonsense words."
So within one battery, spelling real words and spelling nonsense words are classified under different broad abilities. A student can be low on one and average on the other, and the publisher's own taxonomy tells you that means something. This is the closest any norm-referenced battery comes to handing you a mechanism, and it does it by dictating pseudowords — the same logic that makes pseudoword decoding informative in phonological awareness assessment.
The KTEA-3 error analysis, and the sentence practitioners skip
Pearson's KTEA-3 error analysis page states that "Error analysis methods are provided for 10 of the 19 KTEA-3 subtests." Spelling is one of the ten. So far this looks like the answer to everything in this article.
Read the next layer. The ten subtests split into two methods. Six use item-level classification: Phonological Processing, Writing Expression, Math Concepts and Applications, Listening Comprehension, Reading Comprehension and Math Computation. Four use within-item classification, which Pearson describes as requiring "qualitative analysis of the response to determine which error categories are involved." Spelling is in the within-item group, alongside Letter and Word Recognition, Nonsense Word Decoding and Oral Expression.
That distinction decides how the errors were normed. Pearson is explicit:
"The entire KTEA-3 grade norm sample (n = 2600) was used to develop the error norms for the six subtests with item-level error analysis."
And for the others: "a subset of the grade norm sample was included in a stratified error analysis norm sample to establish cut-score norms."
Why this matters in a report
Both groups are normed. They are not normed the same way. The item-level six rest on the full grade norm sample of 2,600. The within-item four, spelling among them, rest on a subset of that sample and yield cut-score norms rather than the same continuous comparison.
Pearson still frames the output usefully — the error analysis lets you "describe performance on a subtest at the specific skill level relative to a norm-reference peer group" and "develop teaching objectives and interventions." That is a genuine bridge between the two families, and the KTEA-3 is the only major battery that builds one.
But if you are going to write "spelling error analysis indicated a weakness in vowel teams relative to grade peers," you should know that the peer comparison behind that sentence comes from a subset sample and a cut score, not from the full normative sample the subtest score came from. Say which you mean.
SPELL-3 is the one that is explicitly criterion-referenced
The Spelling Performance Evaluation for Language and Literacy, Third Edition is published by Pearson, dated 2023, and authored by Jan Wasowicz, Kenn Apel, Julie J. Masterson and Anne Whitney. Grades K through adult. Digital administration, "variable; average 30 minutes."
Its scoring type, in Pearson's own product data, is one phrase: "Criterion-referenced scoring."
Pearson describes it as identifying "the underlying language processes that are interfering with successful reading and spelling" and as "a deep and highly sensitive measure of a student's word study knowledge and skills for reading and spelling words."
What it produces instead of a score
The report set is Results, Recommendations, Parent, Colleague and Intervention Plan, with a Group Intervention Plan also available. Pearson says the assessment "automatically creates a data-driven intervention plan" and tells the practitioner "exactly which patterns and skills to address and in what order," down to a "specific lesson number and word study activities."
That is the other half of the field, stated plainly. You get the teaching sequence and you do not get a standard score, because criterion-referenced scoring is not the kind of thing that produces one.
The detail to hold in view
The lesson numbers point into the publisher's own word study program. That is a straightforward description of how the product works, not an accusation — a criterion-referenced instrument has to reference some criterion, and an instructional sequence is a reasonable one to pick. It is worth naming because the same pattern recurs across this field, where the body that trains you is frequently the body that sells you the materials.
What it means practically: a SPELL-3 intervention plan is maximally actionable if you are already using that curriculum and requires translation if you are not.
The WIST is both, and it is twenty-two years old
There is exactly one published instrument in this area that tries to be both families at once, and the way it does it is instructive. The Word Identification and Spelling Test, authored by Barbara A. Wilson and Rebecca H. Felton, covers ages 7-0 through 18-11 in forty minutes, individually administered.
PRO-ED's description is unusually direct about the dual structure: "It includes both norm-referenced and informal assessments."
Three subtests — Word Identification, Spelling, and Sound-Symbol Knowledge — are used in either mode. In the norm-referenced mode, Word Identification and Spelling are the two core subtests, Sound-Symbol Knowledge is supplemental, and together they yield a composite called the Fundamental Literacy Index. In the informal mode, PRO-ED writes, "the scores are used for clinical and instructional purposes."
The informal half runs three procedures, examining performance on the test items, on sound-symbol skills, and on "errors peculiar to written words." PRO-ED says the resulting information will "help formulate a literacy intervention plan," and markets the test as including "an extensive, yet practical, informal assessment system for analyzing student performance that leads to instructional intervention."
It does not reconcile the two halves — it runs them side by side
This is the honest reading of the design. The WIST does not solve the problem this article describes. It puts both answers in one box and lets the examiner use whichever one the situation calls for, which is a sensible piece of engineering and not a psychometric breakthrough.
The date
The WIST carries a 2004 copyright, and its norms rest on 1,520 children and adolescents in sixteen states. Those norms are twenty-two years old as of 2026.
That is not automatically disqualifying, and the usual ten-year rule of thumb is not in the documents practitioners cite for it. But a standard score from a 2004 normative sample and a standard score from the TWS-6's 2026 sample are not interchangeable, and a report that reproduces both without noting the gap is making a comparison the data do not support.
The marketing line on the same page is also worth reading carefully: the WIST is described as "Ideal for evaluating progress on Orton-Gillingham programs and other alphabet phonics systems." Pre-post measurement against a specific instructional tradition is a narrower purpose than general spelling assessment, and it is the purpose the publisher leads with. If you work in that tradition, see what the Orton-Gillingham label does and does not guarantee.
The developmental inventory, and what a stage is not
The fourth object sold as spelling assessment is the developmental inventory: a word list sequenced by orthographic feature, scored not by how many words are right but by which features the student controls, and summarised as a developmental stage.
Reading Rockets' spelling module sets out the stage model most practitioners have met: Precommunicative, Semiphonetic, Phonetic, Transitional, Correct. Its framing of why errors are informative is the best short statement of the case:
"Children's spellings provide a window into their understanding of language, which is informative for understanding their reading as well as their spelling."
And on what spelling knowledge actually is:
"learning to spell is not a matter of merely memorizing letter sequences, but of developing and applying linguistic knowledge as well as knowledge of letter-sound relationships and vowel patterns."
A stage is a description, not a score
A developmental stage has no standard error, no confidence interval and no normative sample behind it. It is a qualitative summary of which orthographic features a student produced correctly on one occasion. It is enormously useful for planning Wednesday's session and it will not survive a line of questioning in an eligibility meeting, because it was never built to.
The failure mode is specific and common: an inventory result gets written into a report in a sentence that reads like a score. "Performing at the within-word pattern stage" has the grammar of a finding and the evidentiary status of an observation. Write it as the observation it is.
Notice also what the Reading Rockets module does not contain. It describes the stages and the logic of error analysis in detail, and it names no assessment instrument at all. The best-known practitioner-facing explanation of developmental spelling leaves the question of which tool measures it entirely open.
What the federal writing guide actually says about spelling
The What Works Clearinghouse practice guide Teaching Elementary School Students to Be Effective Writers, NCEE 2012-4058, is the federal document in this area. The full guide PDF is also archived in ERIC as ED533112.
Spelling sits inside Recommendation 3: "Teach students to become fluent with handwriting, spelling, sentence construction, typing, and word processing." Its second step is "Teach students to spell words correctly." The panel assigned Recommendation 3 a level of evidence of Moderate Evidence — below the Strong rating it gave Recommendation 2 on the writing process, and above the Minimal ratings on Recommendations 1 and 4.
The guide's own three-way split
Table 6, "Spelling skills by grade level," divides spelling into three kinds of knowledge:
Phonological awareness — "Awareness of the sound structure of spoken words," grades K-2.
Spelling phonics — "Knowledge of how to connect the sounds of spoken English with letters or groups of letters," grades K-3.
Morphological spelling — "Understanding of the meaning of the parts (e.g., prefixes and suffixes) of words," grades 2-6.
Hold that against the instruments. Phonological, orthographic and morphological knowledge is exactly the decomposition a criterion-referenced diagnostic claims to deliver. It is also exactly the decomposition a dictated-word standard score cannot produce, because the score is a count of whole words and a whole word can fail for any of the three reasons.
What the guide never says
The guide tells teachers that this area "requires that teachers continually assess." Searching its text, the word "inventory" appears zero times. The phrase "spelling inventory" appears zero times. The phrase "developmental stage" appears zero times. No spelling assessment instrument is named anywhere in it.
So the federal guidance says teach spelling, says assess it continually, publishes a three-part taxonomy of what spelling knowledge consists of, and recommends no tool for measuring any of it. The gap this article describes is not a gap in the market. It is a gap in the guidance too.
Spelling is a progress-monitoring domain and not a screening domain
One more piece of federal infrastructure makes the asymmetry concrete, and it takes thirty seconds to verify.
The National Center on Intensive Intervention maintains tools charts that rate commercially available assessments against technical standards. On the Academic Progress Monitoring chart, the subject filter offers three choices: Reading, Mathematics, and Spelling and Written Expression.
On the Academic Screening chart, the subject filter offers two: Reading and Mathematics. Spelling is not a screening domain there at all.
What follows from that
NCII's standards framework treats spelling as something you can legitimately track over time with reviewed tools, and does not treat it as something you screen a population with. That is a coherent position — screening decisions carry base-rate consequences that progress monitoring does not — but it has a direct practical implication.
If a referral arrives saying a student "failed a spelling screener," that screener was not reviewed under NCII's academic screening standards, because no spelling screeners are. Ask what the instrument was and what decision rule was applied. The same question is worth asking of anything described as a dyslexia screener, for the same reason: the word is doing more work than the evidence behind it.
For the tools that do appear on the progress monitoring chart, the chart's own rating logic is worth understanding before you read a row — the reasoning is the same as for the progress monitoring systems compared here.
The qualification letters are not what you would expect
Readers of this site will know the running theme: a qualification letter is a purchasing rule for one storefront, not an industry scale. We have found the same test at different qualification levels at different publishers, and found the same math kit sold at level B by one vendor and Level C by another.
Spelling produces the sharpest instance yet, and it runs the other way from what most practitioners assume.
Here is where the five instruments in this article actually sit.
TWS-6, PRO-ED, stated Test Level A. Reports standard scores, percentiles, age and grade equivalents.
TOC-2, PRO-ED, stated Test Level A. Reports six subtest scores and five composites.
WIST, PRO-ED, stated Test Level B. Reports the Fundamental Literacy Index plus an informal analysis.
SPELL-3, Pearson, stated Qualification Level B. Reports a criterion-referenced intervention plan and no standard score.
WIAT-4, Pearson, stated Qualification Level B. Reports a Spelling subtest inside two composites.
PRO-ED's own qualifications policy defines its lowest tier in one sentence:
"QUALIFICATION LEVEL A: There are no special qualifications to purchase these products."
So the two nationally normed instruments in this table that produce standard scores — the TWS-6 and the TOC-2 — carry no purchasing restriction whatsoever. The instrument that produces no standard score at all, SPELL-3, requires level B. And the WIST, whose norm-referenced half is the thinnest of the three, is level B as well.
Why the letter tells you nothing about difficulty of interpretation
The PRO-ED policy is clear that the letter is about purchasing, and it ties that to a principle rather than a skill audit:
"A central principle of professional test use is that individuals should use only those tests for which they have the appropriate training and expertise."
The policy cites the Standards for Educational and Psychological Testing published by AERA, APA and NCME as its basis. PRO-ED's level B, for comparison, is meetable by a master's degree in a relevant field with formal assessment training, or by full active membership in a professional organisation "that requires training and experience in the relevant area of assessment," or by a healthcare degree or licence.
The practical reading: a level A letter means the publisher will sell it to you. It does not mean the test is easy to interpret, and it does not discharge your own obligation to be trained for it.
On the TOC-2 page PRO-ED makes the user population explicit in prose instead of by letter — "Classroom teachers, special education teachers, reading specialists, school psychologists, speech pathologists, or any other professionals with some training in standardized test administration can use the TOC-2." That sentence is more informative than the letter is.
Can any of these identify dyslexia or dysgraphia?
No.
Not the TWS-6, not the TOC-2, not the WIST, not SPELL-3, and not a spelling subtest inside any battery. A spelling instrument measures spelling. Identification of a specific learning disorder is a multi-source determination made by a qualified evaluator under a defined framework, and no single subtest substitutes for it.
Two specific traps are worth naming.
The dysgraphia trap
Spelling is named in the diagnostic territory around written expression, not around handwriting. IDA's Understanding Dysgraphia fact sheet defines dysgraphia in terms of impaired letter writing by hand.
A student with excellent letter formation and terrible spelling is not described by that definition, and a student with illegible handwriting and intact spelling knowledge is a different problem again. The two split along a fault line the products follow, and a spelling score does not locate a student on it.
The orthographic processing trap
A low WIAT-4 Orthographic Processing composite is a composite score, not a process finding. The composite is built from timed and untimed word-level tasks; calling the result "an orthographic processing deficit" converts a score into a mechanism in one sentence, with nothing between them. Report the composite. Let the evaluator draw the inference, which is what AET's Code directs you to do in any case.
What AET's Code actually binds you to here
The AET Code of Ethics, Revision #9, 2025, does not mention spelling. The word does not appear in the document. What it does is set four obligations that bite hard in this specific area, in Section Two, Part One. Educational therapists strive to:
"B. select and use appropriate assessment instruments, recognizing their limitations with respect to reliability, validity, and bias."
"C. use only those assessment instruments for which they have been adequately trained."
"D. seek interpretation of assessment data from professionals in related fields (e.g. medical, psychological, speech/language, neuropsychological)."
Clause B is the one this article is really about. The limitations in question are not hidden — they are printed on the publishers' own product pages, in the purpose statements, in the phrase "criterion-referenced scoring," in the copyright year. Recognising them costs one careful read.
Clause C and the level A problem sit together. Nothing stops you buying a TWS-6. Clause C says the purchase is not the question.
And the part that frames the whole category
AET's own definition of the role, in the same document, says an educational therapist is skilled in "formal and informal educational assessment." Both words, deliberately, in one phrase.
That is the professional body saying the split described here is yours to span. Not resolve — span. You are expected to be able to read a normed score and run an informal analysis, and to know which one you are doing at any given moment. That expectation is consistent with the broader scope map of the role and with the boundary between educational therapy and the neighbouring disciplines.
A decision sequence, not a decision
What follows is a sequence of questions, in order. It does not tell you which instrument to pick for a described student, because that is a clinical judgement and not something an article can make for you.
1. What decision does this assessment have to support? If the answer is an eligibility determination, a placement, or a documented comparison with peers, you need a norm-referenced instrument and a current normative sample. If the answer is "what do I teach on Wednesday," you need a criterion-referenced or informal analysis and a score will not help.
2. If you need a score, how old are the norms? Check the copyright year and the sample description before the subtest content. A 2026 sample and a 2004 sample are different measuring instruments.
3. If you need teaching targets, which taxonomy does the instrument use? The federal guide's three-way split — phonological, spelling phonics, morphological — is a reasonable benchmark. Ask whether the instrument's output maps onto it or onto a proprietary sequence.
4. Are you reading a score or an observation? Write it accordingly. A stage is an observation. A cut-score error norm is a score with a specific and limited comparison behind it.
5. Are you qualified for this instrument, independent of whether you can buy it? Clause C, and the level A problem.
6. Does the question you actually have belong to someone else? Spelling sits at the junction of reading, writing and language. If the real question is about oral language or a diagnosis, clause D applies.
Where the published record runs out
Several things in this area could not be established from primary sources this run, and they are listed here rather than filled in.
Commercial developmental spelling inventories. No primary publisher page for a current commercial developmental spelling inventory could be retrieved this run. Searches for the best-known of them returned aggregator and content-farm pages rather than publisher documentation.
Nothing is therefore asserted here about any such product's current edition, publisher, stage definitions or normative claims. The stage model described above is cited to the Reading Rockets module, which is a practitioner-facing explanation and not a test manual.
The TWS-6 and TOC-2 manuals. Everything stated above about both instruments comes from PRO-ED's product pages. The examiner's manuals were not read, so the reliability coefficients, the standard errors of measurement and the validity studies are described only as PRO-ED summarises them. The Buros Center's listing for the TWS-6 and its listing for the WIST are the place to look for independent review.
SPELL-3's linguistic modules. Pearson's public product data states the scoring type, the reports and the qualification level but does not enumerate the specific linguistic knowledge areas the instrument probes. The descriptions above use Pearson's own general language. If the specific module structure is load-bearing for your decision, ask Pearson directly rather than relying on a secondary description.
The WIST and Wilson certification. The WIST's first listed author is the founder of a well-known structured literacy program, and that program's certification requirements have in the past specified norm-referenced pre- and post-testing. Those requirements could not be re-verified this run, so no claim is made here about whether the WIST is currently named in them.
WPS qualification definitions. As in previous pieces on this site, what WPS means by its own letters remains unretrievable by any automated method available here. Nothing is asserted about it.
This article cites a smaller number of domains than most on this site. That is a property of the subject rather than a shortfall: the complete universe of primary sources for spelling assessment is two test publishers, one federal institute, one federal technical assistance centre, one professional body and one practitioner-facing literacy site. Padding it would have meant citing secondary sources.
How this sits against the rest of the assessment picture
Several organisations and several of our own earlier pieces share a vocabulary with this one and mean different things by it. Each line below names the finding, not the title.
A letter on a storefront is a purchasing rule rather than an industry scale, which is the whole argument of achievement test qualification levels.
The same instrument can carry two different letters at two different vendors, confirmed again in math assessment tools for dyscalculia.
A published norm describes what students did rather than setting a target, which oral reading fluency norms demonstrates in the authors' own technical report.
An umbrella construct lets every instrument decide its own boundaries, which is the finding in phonological awareness assessment.
The word "aligned" turns out to mean four different things, as the IDA Knowledge and Practice Standards sets out.
Five public systems rate reading programs and none rates what a practitioner is choosing between, per reading program evidence ratings.
Programs sold under one label are not the same kind of object, which reading intervention programs compared works through program by program.
The guides recommend practices and the market sells programs, and the two do not map onto each other — the spine of reading intervention for older students.
The evidence for the service model and the evidence for its components are different questions, as is educational therapy evidence-based explains.
A published dosage is a fidelity specification rather than a minimum effective dose, per intervention session frequency and duration.
Publishers set their own terms for testing through a screen, collected in remote assessment administration.
Permission, consent and assent are three different acts and only one code names all three, from educational therapy informed consent.
Six bodies mean six different things by "supervised hours", documented in educational therapy supervision requirements.
Executive function instruments face the same construct problem spelling does, laid out in executive function assessment tools.
And the credential ladder behind all of this is mapped in how to become an educational therapist.
Frequently asked questions
Can a spelling test diagnose dyslexia?
No. A spelling instrument measures spelling. Identification of a specific learning disorder is a multi-source determination made by a qualified evaluator, and no spelling test — standalone or inside a battery — substitutes for that process. Poor spelling is common in students later identified with dyslexia, but the inference does not run backwards from a single score.
What is the difference between a norm-referenced spelling test and a criterion-referenced one?
A norm-referenced test compares a student's performance to a national sample and yields standard scores, percentiles and equivalents. A criterion-referenced test compares performance to a defined body of knowledge and yields a description of what the student does and does not control. SPELL-3's product data names its scoring type as "criterion-referenced scoring" and it produces an intervention plan rather than a score.
Which spelling assessment tools can I buy without a graduate degree?
PRO-ED classifies both the TWS-6 and the TOC-2 at qualification level A, which its own policy defines as "There are no special qualifications to purchase these products." That is a purchasing rule only. PRO-ED's policy separately states the principle that individuals "should use only those tests for which they have the appropriate training and expertise," and AET's Code requires that you use only instruments for which you have been adequately trained.
Does a developmental spelling stage belong in a written report?
It belongs there as an observation, described as one. A stage has no normative sample, no standard error and no confidence interval behind it, so it cannot support a comparison with peers. It is useful for instructional planning and it should not be written in the grammar of a test score.
Why does the KTEA-3 error analysis norm spelling differently from other subtests?
Pearson's error analysis uses two methods. Six subtests use item-level classification and their error norms rest on the entire grade norm sample of 2,600. Four subtests, including Spelling, use within-item classification, and for these "a subset of the grade norm sample was included in a stratified error analysis norm sample to establish cut-score norms." Both are normed; the comparison behind them is different.
Is spelling screened under the federal tools charts?
Not as a screening domain. NCII's Academic Progress Monitoring chart offers Reading, Mathematics, and Spelling and Written Expression as subject filters. Its Academic Screening chart offers only Reading and Mathematics. So spelling is reviewed there as something to monitor over time, not as something to screen a population with.
Where this leaves your next intake
The practical takeaway is short. Decide which question you are asking before you open the catalogue, because the instruments answer two different ones and the labelling does not distinguish them. Read the purpose statement on the product page — it is three sentences and it is the most informative thing the publisher prints. And when you write it up, keep the score and the observation in separate sentences.
The field's documentation is thinner here than it is for reading, and the federal guidance recommends practices without recommending tools. That is an opening for practitioners who can hold the distinction clearly, and a hazard for anyone who assumes the word "diagnostic" on a box means what it means in a report.
If you work with students on spelling and writing and you want to be part of a network of practitioners doing this carefully, join the Illuminate educator list. We send practice-facing material to educational therapists, learning specialists and executive function coaches, and we would rather have your corrections than your silence.
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