SNAP-IV 26-Item ADHD Rating Scale

The SNAP-IV-26 is a rating scale that a parent or a teacher fills in about a child: nine items on inattention, nine on hyperactivity-impulsivity, and eight on oppositional behavior. Each item is rated from 0 to 3, and each subscale is scored as its average rating, from 0 to 3. See how to work out the averages, which cutoffs apply to parents and which to teachers, and how to track treatment, then record the result with the free template.

  • Score bands explained
  • Recording template to copy
  • Two recorded examples

SNAP-IV result template

Free
SNAP-IV-26 RATINGS

Date reviewed: [Date]
Child: [Name or ID, age, school grade]
Why rated: [New attention or behavior concern, ADHD assessment, or treatment check]
Rating window: [The period raters were asked to describe, such as the past month]

RATERS
Parent or caregiver: [Name, relationship to the child, date completed]
Teacher: [Name, class or subject, how long they have taught the child]
Treatment during the window: [Medicine and dose for each rater's window, or none]

SUBSCALE AVERAGES
Inattention, items 1 to 9: [Parent average and teacher average, 0 to 3; band for each]
Hyperactivity-impulsivity, items 10 to 18: [Parent and teacher averages; band for each]
Combined ADHD, items 1 to 18: [Parent and teacher averages]
Oppositional, items 19 to 26: [Parent and teacher averages; band for each]
Rater cutoffs reached: [Which averages reach the parent or teacher cutoff for that subscale, or none]

ITEMS RATED 2 OR 3
Inattention: [Parent count out of 9, teacher count out of 9]
Hyperactivity-impulsivity: [Parent count out of 9, teacher count out of 9]
Oppositional: [Parent count out of 8, teacher count out of 8]
Blank items: [Item numbers left blank and whether they were asked, or none]

HOME AND SCHOOL COMPARED
Where the raters match: [Subscales and behaviors both describe]
Where they split: [Subscales that differ by half a point or more, and the likely reason]

CHANGE SINCE LAST RATING
Earlier averages: [Date, rater, and each subscale average, or first rating]
Change: [Rise or fall in each subscale, each rater against their own earlier form]

IMPRESSION
Rating pattern: [Inattentive, hyperactive-impulsive, combined, oppositional, or below threshold]
Clinical summary: [Onset, settings, impairment, and other explanations weighed]

PLAN
Next step: [Full ADHD assessment, start or adjust treatment, school supports, or rate again]
Next ratings due: [Which raters, and when]

Clinician: [Name, credentials]

Get the official SNAP-IV from its source.

Who holds it

James M. Swanson, Ph.D., University of California, Irvine, revising the SNAP questionnaire he first published with Edith Nolan and William Pelham in 1983. The 26 items are the ADHD and oppositional items whose parent and teacher ratings measured outcomes in the MTA treatment study.

How you may use it

Dr. Swanson posted the SNAP-IV and its scoring instructions free online, and CADDRA, an ADHD resource alliance for clinicians, posts the 26-item form as a free printable PDF. No licence for reproducing it in other products is published, so this page names the subscales and gives the scoring, and sends you to that printable form for the items.

Use it for

  • Pediatric ADHD assessment
  • School concerns about attention
  • ADHD medication reviews
  • Child psychiatry and psychology
  • Family practice

What the score means. 0 to 3, inattention average, the mean of items 1 to 9.

0 to 1.33: Not clinically significant

A total of 12 or less out of 27. Inattention is rated in the range most children score. Check the other subscales and the other rater before setting the concern aside.

1.44 to 1.89: Mild

A total of 13 to 17. Some inattention items are rated quite a bit or very much. A parent average of 1.78 or more reaches the parent cutoff; get the teacher’s rating and the history before deciding.

2 to 2.44: Moderate

A total of 18 to 22. Many inattention items are rated quite a bit or very much: above the parent cutoff of 1.78, though under the teacher cutoff of 2.56. Worth a full ADHD assessment with a second rater.

2.56 to 3: Severe

A total of 23 to 27. Most inattention items are rated quite a bit or very much, at or above both the parent and teacher cutoffs. Assess for ADHD and the conditions that come with it, and ask what support school needs now.
  • Each item is rated 0 for not at all, 1 for just a little, 2 for quite a bit, and 3 for very much. Items 1 to 9 make up the inattention subscale, 10 to 18 hyperactivity-impulsivity, and 19 to 26 oppositional behavior.
  • Each subscale score is an average: add its ratings and divide by its number of items, 9 for each ADHD subscale and 8 for oppositional. The combined ADHD average uses all 18 ADHD items. Score the parent and teacher forms separately.
  • The bands on this page come from the suggested guideline in the scoring guide that circulates with the 26-item form. It bands the inattention total as under 13 of 27 not clinically significant, 13 to 17 mild, 18 to 22 moderate, and 23 to 27 severe. With nine items, the averages fall in ninths, so the bands run to 1.33, from 1.44 to 1.89, from 2.00 to 2.44, and from 2.56 to 3. The guideline uses the same bands for hyperactivity-impulsivity, for parents and teachers alike, and it hasn’t been validated.
  • For the oppositional subscale the guideline bands the total out of 24: under 8 not clinically significant, 8 to 13 mild, 14 to 18 moderate, and 19 to 24 severe. As averages over eight items, that’s up to 0.88, 1.00 to 1.63, 1.75 to 2.25, and 2.38 to 3.
  • Swanson’s scoring instructions give tentative cutoffs that mark roughly the top 5% of ratings, and they differ by rater and subscale. Parent averages: inattention 1.78, hyperactivity-impulsivity 1.44, combined 1.67, oppositional 1.88. Teacher averages: inattention 2.56, hyperactivity-impulsivity 1.78, combined 2.00, oppositional 1.38. Later reviewers couldn’t trace the study behind them, so use them as a guide.
  • A count is another way to read the form. Count the items rated 2 or 3 in each subscale: six or more of nine in inattention or hyperactivity-impulsivity matches the DSM-5 symptom count for children under 17, and four or more of the eight oppositional items matches the count for oppositional defiant disorder.
  • For follow-up, the guide suggests targets of under 13 of 27 on each ADHD subscale and under 8 of 24 on oppositional. In the MTA study, an average at the “just a little” level across parent and teacher ratings of the ADHD and oppositional items marked a successful outcome.
  • It’s a rating scale, not a diagnosis. ADHD also needs impairment, several symptoms before age 12, symptoms in two or more settings, and other causes considered, from a clinician’s assessment.

How to give it, score it, and read it.

Handing out the form

The same form goes to a parent and to a teacher, and each fills in their own copy. They rate how well each behavior describes the child, from not at all to very much.

  • Ask each rater to fill it in alone, without comparing answers
  • Choose a teacher who sees the child most school days; in middle and high school, a teacher of a core subject
  • Name a time window, such as the past month, since the form doesn’t set one, and use the same window every time
  • Note any medicine the child took during the window, and the dose

Avoid: Sending both copies home for the parent to fill in. Each rater stands for a setting, and the teacher’s view of the classroom is the point of the second form.

Working out the averages

Add each subscale’s ratings and divide by its number of items: 9 for inattention, 9 for hyperactivity-impulsivity, and 8 for oppositional behavior.

  • Keep the parent’s and teacher’s averages apart
  • Work out the combined ADHD average from all 18 ADHD items as well
  • Give averages to two decimal places, as the cutoffs are
  • Ask about any blank item before scoring; an average from fewer items is less reliable

Avoid: Adding all 26 ratings into one total. The subscales measure different things, and a grand total has no cutoff.

Reading the averages

Read each average against the band, then against the cutoff for that rater and that subscale.

  • Compare a parent’s inattention average with 1.78, and a teacher’s with 2.56
  • Check hyperactivity-impulsivity against 1.44 for parents and 1.78 for teachers
  • Read the oppositional average too: 1.88 for parents and 1.38 for teachers
  • Treat an average close to a cutoff as a reason to gather more, not as a verdict

Avoid: Reading a teacher’s average against the parent cutoff. A teacher inattention average of 2.0 is over the parent cutoff but well under the teacher’s.

Counting items rated 2 or 3

A rating of quite a bit or very much counts as the symptom being present, which sets the form beside the DSM-5 symptom counts.

  • Six or more of nine in inattention or hyperactivity-impulsivity matches the count for children under 17; from 17, it’s five
  • Four or more of the eight oppositional items matches the oppositional defiant disorder count
  • Record the counts next to the averages, for each rater

Avoid: Treating six of nine as a diagnosis. DSM-5 also needs impairment, onset before age 12, two settings, and other causes ruled out.

Comparing home and school

Parents and teachers often rate the same child differently. Where they differ is part of the result.

  • Note the subscales where the raters agree and where they split
  • Ask what each setting asks of the child: long lessons, homework, unstructured time
  • Ask a second teacher, a coach, or a child care worker when the two disagree sharply
  • Consider what can raise ratings in one place: a learning disorder, anxiety, poor sleep, hearing or vision problems, or stress at home

Avoid: Averaging the two raters into one figure for diagnosis. Each form is one setting.

Tracking treatment

Repeat the form with the same raters and the same window after treatment starts or changes. The averages show small changes well.

  • Compare each rater with their own baseline, subscale by subscale
  • Aim for the suggested targets: under 13 of 27 on each ADHD subscale, an average below 1.44, and under 8 of 24 on oppositional, below 1.00
  • Ask about appetite, sleep, mood, and other side effects separately, since the form doesn’t cover them
  • Rate again at each dose change, then at regular reviews

Avoid: Setting a new teacher’s ratings against last year’s teacher without saying so. A change of rater can move the average on its own.

Two recorded results. Every part, filled in.

Each one follows the recording template. Use them to judge how much to write.

SNAP-IV result: moderate inattention on both forms, 9-year-old

Family practice, visit to review forms sent home and to school after his teacher raised concerns at a parent-teacher meeting

Raters

9-year-old boy in grade 4. Ratings from his father and from his homeroom teacher, who has taught him since September. Both asked to describe the past month. No medicines.

Subscale averages

Inattention: father 2.22, teacher 2.33, both moderate. Hyperactivity-impulsivity: father 1.00, teacher 0.89, both not clinically significant. Combined: 1.61 on both forms. Oppositional: father 0.75, teacher 0.25. The father’s inattention average is above the parent cutoff of 1.78; the teacher’s is below the teacher cutoff of 2.56.

Items rated 2 or 3

Inattention: father 7 of 9, teacher 8 of 9. Hyperactivity-impulsivity: father 1, teacher 0. Oppositional: 0 on both. No blank items.

Home and school compared

Close agreement. Both describe a quiet boy who loses track halfway through instructions, leaves worksheets unfinished, and forgets what to bring home. His teacher sees careless errors in math that he can fix when she points them out. His father says a page of homework takes an hour with him sitting beside him.

Impression

Inattentive pattern on both forms, with few hyperactive or oppositional symptoms. Report cards from grades 2 and 3 mention daydreaming and work left unfinished. He worries before tests, so anxiety needs a closer look. Hearing and vision normal at his check-up in the spring; sleeps about 10 hours and doesn’t snore.

Plan

Full ADHD assessment booked for a longer visit in 2 weeks: DSM-5 interview with both parents and with him, developmental and school history, and an anxiety screen. Asked the school whether a learning assessment for math is possible. No treatment started today.

Common mistakes, and how to avoid them.

One cutoff for both raters

Parents and teachers have different cutoffs. An inattention average of 2.0 is over the parent cutoff of 1.78 but under the teacher cutoff of 2.56.

Adding everything together

The SNAP-IV is scored as an average for each subscale. A total of all 26 ratings mixes ADHD and oppositional items and means nothing on its own.

Diagnosing from the averages

High averages show a pattern of symptoms. The diagnosis needs the history, impairment, onset before 12, and symptoms in two settings.

Skipping the oppositional items

Items 19 to 26 often explain the conflict at home and change the plan. Score them on every form.

Leaving out the window and the medicine

Ratings on medicine differ from ratings off it. Write down the time window and the treatment for each form.

Say the averages. Review the note.

Vero Scribe records the SNAP-IV result in your template from the visit, with the family’s consent, or from your dictation: each rater’s subscale averages, the item counts, how home and school compare, and the plan. You review and edit every line, then copy it into your record. Vero works in 60+ languages.

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Frequently asked questions.

How do you score the SNAP-IV-26?

Each item is rated 0 for not at all, 1 for just a little, 2 for quite a bit, and 3 for very much. Add the ratings in each subscale and divide by its number of items: items 1 to 9 for inattention, 10 to 18 for hyperactivity-impulsivity, and 19 to 26 for oppositional behavior. Each average runs from 0 to 3. Score the parent and teacher forms separately.

What SNAP-IV score indicates ADHD?

No single score does. Swanson’s tentative cutoffs for the inattention average are 1.78 for parents and 2.56 for teachers; for hyperactivity-impulsivity, 1.44 and 1.78; for the combined 18 items, 1.67 and 2.00. The scoring guide that comes with the 26-item form bands each ADHD subscale total as under 13 of 27 not clinically significant, 13 to 17 mild, 18 to 22 moderate, and 23 to 27 severe. A high result supports a full ADHD assessment; the diagnosis comes from the clinician.

Why are the parent and teacher cutoffs different?

Each cutoff marks roughly the top 5% of ratings from that kind of rater, and parents and teachers rate differently. Teachers need a higher inattention average to reach the cutoff, 2.56 against 1.78, while for oppositional behavior the teacher cutoff is lower, 1.38 against 1.88. Read each form against its own rater’s cutoff.

How is the SNAP-IV different from the Vanderbilt?

Both rate the 18 DSM ADHD symptoms on parent and teacher forms. The SNAP-IV-26 uses one form for both raters, scores each subscale as an average, and carries the same eight oppositional items for each rater. The Vanderbilt counts symptoms rated often or very often, adds performance ratings that show impairment, and screens for anxiety, depression, and conduct problems. The SNAP-IV’s averages make small changes easy to see at medication reviews; the Vanderbilt’s performance items help show impairment at a first evaluation.

What is the difference between the SNAP-IV 26, 18, and 90-item versions?

The full SNAP-IV-C has 90 items: the ADHD and oppositional items, items taken from older Conners scales, items on conditions that overlap with or mimic ADHD, and 10 classroom items from the SKAMP scale. The 26-item version keeps the 18 ADHD and 8 oppositional items, and the 18-item version keeps only the ADHD items. All three score the ADHD subscales the same way.

What ages is the SNAP-IV for?

It’s used for school-age children and teenagers, roughly 6 to 18. A 2008 school-district study published parent and teacher norms for children from kindergarten to grade 5, so the norms are firmest for younger school-age children.

Show all questions
How do you use the SNAP-IV to track ADHD treatment?

Ask the same parent and teacher to rate the same window at baseline and after each change, and compare each subscale average with that rater’s baseline. The suggested targets are under 13 of 27 on each ADHD subscale, an average below 1.44, and under 8 of 24 on oppositional, below 1.00. In the MTA study, an average at the “just a little” level across parent and teacher ratings marked a successful outcome.

Who can fill in and score the SNAP-IV?

A parent or caregiver and a teacher fill in the form, and anyone in the care team can hand it out. A clinician scores and reads it, and the diagnosis comes from a clinician’s assessment, such as by a pediatrician, family physician, psychiatrist, or psychologist.

Is the SNAP-IV free?

Yes, it’s free to use in practice. Dr. Swanson posted the form and its scoring instructions free online, and CADDRA posts the 26-item form as a free printable PDF, linked from this page. No licence for building it into other products is published, so this page doesn’t reproduce the items. The recording template on this page is free to copy or download.

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