What are dyslexia assessments? Benefits, how they work, and when you need them
A student can be engaged and capable, yet still find reading a paragraph exhausting, spelling unpredictable or written work disproportionately difficult. Without understanding why, those difficulties can easily be mistaken for low attainment, disengagement or a lack of effort.
For some young people, a dyslexia assessment can change that picture. And it’s not just about attaching a label – a diagnostic assessment can show how a student processes information, identify strengths and difficulties, and help the adults supporting them make more informed decisions about their education.
According to the British Dyslexia Association, around one in 10 people has dyslexia – approximately 6.7 million people in the UK – including more than one million schoolchildren, many of whom remain undiagnosed. At the same time, the latest Department for Education figures show that more than 1.8 million pupils in England have special educational needs, an increase of 5.2% in a year.
Schools and local authorities that support young people whose education may already have been disrupted need to identify specific needs early so they don’t become another barrier to learning.
What is dyslexia?
Dyslexia is a specific learning difficulty associated particularly with the acquisition of reading and spelling. Difficulties with reading fluency and spelling are key markers, while areas such as phonological processing, working memory, and processing speed can also affect how dyslexia impacts an individual.
Importantly, dyslexia is not a reflection of intelligence. It occurs across the ability range, which means a highly capable student can be dyslexic too.
This can sometimes make dyslexia less obvious than expected. A student may achieve reasonable grades but take much longer to complete tasks than their peers. Others develop strategies that compensate for their difficulties until academic demands increase.
Possible indicators can include persistent difficulties with reading accuracy or fluency, spelling, organising written work, remembering sequences or instructions, and completing literacy-heavy tasks at the expected pace. However, these signs alone cannot diagnose dyslexia.
What is a dyslexia assessment?
A full dyslexia diagnostic assessment is an in-depth evaluation carried out by an appropriately qualified professional. It is different from a dyslexia screener. Screening tools can indicate whether a student shows characteristics associated with dyslexia and whether further investigation may be useful, but they do not provide a formal diagnosis.
A diagnostic assessment considers a much broader range of evidence. The precise tests used depend on the individual, but areas assessed can include reading, spelling and writing alongside relevant processing skills such as memory and processing speed.
The assessor then interprets the results alongside the student’s developmental and educational history to build a detailed profile rather than relying on one test score.
Current guidance from the SpLD Assessment Standards Committee (SASC) emphasises that diagnostic assessment should be rigorous, comprehensive and appropriate to the individual. SASC also notes that assessment can be particularly appropriate when literacy attainment is unexpectedly low, intervention is not producing the anticipated progress, there is a strong family history of specific learning difficulties, or dyslexia is suspected, and an assessment has been requested.
Why can a dyslexia assessment make a difference?
For students experiencing barriers to education, understanding the cause of a difficulty can be particularly valuable. A learner who repeatedly struggles with reading, writing or processing information may begin to view themselves as “bad at school”. Difficulties can become more pronounced after missed education or as curriculum demands increase.
A dyslexia assessment provides a clearer evidence base for schools and professionals to respond. The resulting profile can help teams understand where a student is experiencing difficulty and what adjustments or approaches may reduce those barriers. It can also highlight strengths that may be less visible when attention has been focused primarily on attainment or attendance.
Crucially, a diagnosis is not the end of the process. Its value lies in turning assessment findings into appropriate support.
What happens during an online dyslexia assessment?
A robust online assessment follows a structured process and should be conducted by an appropriately qualified specialist. Before the session, the assessor gathers relevant background information. This can include the student’s developmental, educational and medical history, giving the assessor important context for interpreting their results.
The assessment itself takes place live through secure video conferencing. Recognised, standardised tests are used to explore areas including:
- reading
- spelling
- writing
- memory
- processing speed
A full diagnostic session will typically take between two and three hours. Where appropriate, this can be divided across sessions so that the student can remain comfortable and engaged.
Afterwards, the assessor scores and analyses the results against current professional guidance. A diagnosis is therefore not normally given immediately at the end of the appointment. The outcome is confirmed after the assessor has considered all evidence and set it out in the written report.
Even where dyslexia is not identified, the assessment can still be useful. A good report should explain the profile that emerged from testing and provide recommendations based on the student’s individual strengths and areas of difficulty.
What is included in Academy21's new dyslexia assessments?
Academy21 can provide access to a full online dyslexia diagnostic assessment, using the same specialist assessment service available through our sister school, King’s InterHigh.
The service provides schools, local authorities, students, and families with clear evidence and practical next steps. The process includes:
- Specialist assessment: assessments are carried out by appropriately qualified specialist teacher assessors with Level 7 dyslexia assessment qualifications.
- Recognised standardised tests: assessment explores relevant areas including reading, spelling, writing, memory and processing speed.
- Professional analysis: results are scored and interpreted against current diagnostic criteria and professional guidance.
- A comprehensive written report: the report explains the student’s strengths, areas of difficulty and assessment findings, with a formal diagnostic conclusion where appropriate.
- Practical recommendations: findings are translated into recommendations that can inform learning support and reasonable adjustments.
- Guidance on next steps: the report can help inform conversations about ongoing support and, where applicable, exam access arrangements.
- Secure online delivery: the assessment is conducted live online, reducing geographical barriers to accessing a specialist assessor.
Assessments are conducted in line with SASC and SpLD Working Group guidance, and specialist teacher assessors are registered with SASC and hold a current Assessment Practising Certificate (APC).
Can a dyslexia assessment help with exam access arrangements?
A diagnostic report can provide valuable evidence when considering support, but a diagnosis of dyslexia does not automatically guarantee a particular exam access arrangement.
Exam arrangements are determined according to the relevant regulations and evidence of the student’s needs and normal way of working.
For students who specifically require current assessment evidence for examination access arrangements, a different assessment may sometimes be appropriate: a Form 8 Part 2 Access Arrangements Assessment.
What is a Form 8 Part 2 Access Arrangements Assessment?
A Form 8 Part 2 Access Arrangements Assessment provides standardised assessment evidence on areas such as reading accuracy and speed, spelling, and processing speed to support an application for reasonable adjustments in accordance with Joint Council for Qualifications (JCQ) requirements.
Academy21 also offers this service over a detailed video session. The student’s assessor will then interpret the results in line with JCQ guidance before completing and signing your Form 8 Part 2 to confirm it meets regulatory requirements. Along with a report, schools and families will receive guidance on how to use the evidence to support exam access arrangements such as extra time, rest breaks, or a word processor.
Determining which assessment is appropriate before booking is important. A student seeking to understand whether they have dyslexia may need the full diagnostic route, while another with an established history of need may need specific evidence for examination arrangements.
From identification to the right support
For schools and local authorities supporting students with complex or disrupted educational journeys, a clear dyslexia assessment can inform more individualised decisions about teaching, adjustments, and future provision.
At Academy21, we meet learners where they are, maintaining educational continuity and helping students rebuild confidence and progress towards their next stage.
Access to specialist dyslexia assessments adds another layer of support: giving education professionals, students, and families clearer evidence to understand need and plan what comes next.
If you would like to discuss our services with our team, learning more about how we teach, or refer a student, please reach out to our friendly team.
