SNAP-IV Assessment
The SNAP-IV helps answer one of the most important questions in an ADHD assessment: Are the behaviours happening in more than one environment? ADHD cannot be diagnosed based on what happens at home alone or in school alone.
That’s why every Global Education Testing ADHD assessment includes SNAP-IV questionnaires completed by both parents and teachers. We then compare those observations with objective cognitive and attention testing to determine not just whether ADHD behaviours exist, but why they exist.
The SNAP-IV (Swanson, Nolan and Pelham Rating Scale) is one of the world’s most widely used behavioural questionnaires for ADHD. The version we use contains 26 questions covering attention, hyperactivity/impulsivity and oppositional behaviours.
Every assessment we carry out includes SNAP-IV questionnaires from both home and school.
Why the SNAP-IV Matters
A diagnosis of ADHD isn’t based simply on whether a child struggles to concentrate.
Under the DSM-5-TR, several symptoms must be present in two or more settings, such as at home and at school. This is one of the core diagnostic requirements.
The SNAP-IV provides that evidence by gathering independent observations from parents and teachers.
If difficulties are only reported by one person or only occur in one environment, ADHD may not be the correct explanation. That’s why collecting information from multiple settings is so important.
What Does the SNAP-IV Measure?
The questionnaire looks at three key areas of behaviour.
Inattention
- Difficulty sustaining attention
- Poor organisation
- Forgetfulness
- Losing things
- Being easily distracted
- Struggling to follow instructions
Hyperactivity and Impulsivity
- Restlessness
- Fidgeting
- Difficulty staying seated
- Excessive talking
- Interrupting others
- Acting before thinking
Oppositional Behaviour
- Arguing with adults
- Defiance
- Losing temper
- Deliberately annoying others
Each behaviour is rated according to how often it occurs, allowing psychologists to compare the results with established clinical norms.
Why a Questionnaire Alone Cannot Diagnose ADHD
The SNAP-IV tells us what people are seeing.
It doesn’t tell us what is causing those behaviours.
Many different conditions can produce behaviours that look remarkably similar to ADHD.
For example:
- A child with dyslexia may appear inattentive because reading requires enormous effort.
- A child with working memory difficulties may constantly forget instructions.
- A student learning in a second language may appear distracted simply because they need longer to process verbal information.
- Anxiety can make concentration extremely difficult.
On a SNAP-IV questionnaire, all of these children could receive elevated attention scores.
This is why behavioural rating scales should never be used in isolation. A proper assessment must determine whether ADHD is genuinely present or whether another condition provides a better explanation.
How the SNAP-IV Fits Into Our Gold Standard Assessment
The SNAP-IV is one important piece of the puzzle, but it is only one piece. It tells us whether ADHD behaviours are being observed consistently across different environments. Our wider assessment then investigates the reason those behaviours exist.
For example:
- MOXO Continuous Performance Test provides an objective measure of attention, impulsivity, timing and hyperactivity under controlled conditions.
- Conners questionnaires provide additional behavioural evidence and include validity checks that help identify inconsistent responses.
- WISC-V or WAIS-IV evaluates cognitive ability, including working memory and processing speed.
- WIAT-III identifies whether learning difficulties such as dyslexia or dyscalculia are driving the classroom behaviours instead.
By combining behavioural observations with objective testing, we can distinguish ADHD from other conditions that often look very similar.
Why Teacher Questionnaires Matter
Obtaining teacher feedback is often the most challenging part of an ADHD assessment, particularly in international schools.
Students may have several different teachers, may have only recently joined the school, or may divide their time across multiple classrooms.
Rather than asking parents to chase busy teachers themselves, Global Education Testing manages this process for you. Our team contacts the school directly, identifies the most appropriate staff members and coordinates completion of the questionnaires on your behalf.
This makes the assessment process much smoother for families while ensuring we obtain the information needed for an accurate diagnosis.
Why Interpretation Matters More Than Scoring
Calculating a SNAP-IV score is straightforward. Understanding what that score actually means requires specialist expertise.
It is common for parents and teachers to describe a child very differently. Far from being a problem, these differences often provide valuable clinical information.
For example, a child who struggles only in school may be responding to increasing academic demands rather than having ADHD. Conversely, behaviours seen consistently across every environment may point much more strongly towards a neurodevelopmental condition.
An experienced Educational Psychologist considers these patterns alongside cognitive testing, academic achievement and objective attention measures before reaching any diagnostic conclusion.
Every Global Education Testing assessment includes the SNAP-IV completed by parents and by school, with subscale scores reported for inattention, hyperactivity and impulsivity, and oppositional behaviour.
The report interprets those ratings against objective attention data, cognitive ability and academic attainment, states the diagnosis, and specifies the examination accommodations the findings support.
It sets out immediately actionable recommendations for school and home, is delivered within 7 days, and is backed by our Exam Board Acceptance Guarantee.