3. May 2026

Why the Age for a Dyslexia Assessment Has Changed, and Why It Matters for Your Child

When a parent suspects their child may have dyslexia, the instinct is to act quickly. That instinct is completely understandable — and in most respects it is the right one. Early identification matters. However, when it comes to the age at which a formal dyslexia assessment takes place, newer guidance from the SpLD Assessment Standards Committee (SASC) has introduced an important shift that every parent should understand.

What Has Changed?

SASC — the body that sets the standards for SpLD assessment practice in the UK now strongly recommends that formal dyslexia assessments are carried out from the age of 8 as a general guide, rather than 7 as many families previously assumed.

This is a relatively recent change in professional guidance and one that is not yet widely understood outside of the assessment community. Additionally, it has a very practical implication for families — one that is worth understanding before booking an assessment.

Why Age 8 and Not 7?

The reasoning behind this guidance is rooted in child development and the pace of literacy teaching.

By the age of 7, most children are still in the relatively early stages of formal reading and spelling instruction. The gap between a child with dyslexia and their peers may be present, but it is not always sufficiently established to assess with the reliability and depth that a formal diagnostic assessment requires.

Additionally, the standardised tests used in a dyslexia assessment are norm-referenced — meaning a child's performance is compared to others of the same age. At age 7, the norms are narrower and the picture that emerges from assessment is less stable than it becomes at age 8, when a fuller year of literacy development has taken place.

This does not mean that concerns about a 7-year-old should be ignored. Far from it. It means that the formal assessment process is likely to produce a more accurate, more reliable, and more useful picture when it takes place at 8.

Can a Child Be Assessed at 7?

Yes — but with an important caveat.

Assessment at age 7 is possible where significant evidence already exists to support it. This means documented concerns from school, a clear pattern of difficulty observed over time, and evidence that early intervention has not resolved the difficulties. In other words, where the case for assessment is already well established and waiting is genuinely not in the child's best interests.

However, where assessment at 7 is carried out, there is a real risk that the report may need to be repeated. If the picture changes significantly as the child develops further — or if the assessment was carried out before literacy teaching had reached a level where the findings were fully stable — the original report may not hold the weight it needs to hold for later purposes.

That means families could find themselves funding a second assessment further down the line.

Why Does This Matter So Much?

This is where the valid-for-life point becomes critically important.

A dyslexia assessment carried out by a qualified assessor holding an Assessment Practising Certificate (APC), at age 8 or above, does not need to be repeated. The report produced is valid for life. It can support exam access arrangements at school, DSA applications at university, and workplace adjustments in employment — all from a single assessment.

That is a significant long-term benefit. Additionally, it means that waiting until age 8 — where it is appropriate to do so — is not a delay. It is an investment in getting the assessment right the first time, so it never needs to be done again.

What Should I Do If My Child Is 7 and I Am Already Concerned?

The most important thing is not to wait passively. There is a great deal that can and should happen before a formal assessment takes place.

Speak to the school's SENCo. Ask whether concerns have been formally identified and whether the school has begun an APDR (Assess, Plan, Do, Review) cycle. Schools do not need a formal diagnosis to put support in place, and early structured support can make a real difference.

Document everything. Keep a record of specific difficulties you are observing at home — particular words, avoidance behaviours, patterns over time. This evidence base strengthens the case for assessment when the time comes and gives the assessor valuable context.

Get an eye test done. Visual difficulties can affect reading and should be ruled out as a contributing factor before a formal dyslexia assessment takes place.

Make contact with a qualified assessor. A good assessor will have an honest conversation with you about timing, whether assessment at 7 is appropriate in your child's specific circumstances, and what the implications are for the long-term validity of the report.

A Final Word

The shift in guidance to age 8 is not a barrier — it is a safeguard. It exists to ensure that when a formal dyslexia assessment takes place, it produces the most accurate, reliable, and durable picture possible. A report that is valid for life, produced at the right time, is worth considerably more than an earlier report that may need repeating.

If your child is approaching 7 or 8 and you have concerns, now is exactly the right time to start that conversation.

At Defining Dyslexia, I am happy to discuss the right timing for your child's assessment before you book — including whether assessment at 7 is appropriate in your specific circumstances, or whether waiting until 8 would better serve your child in the long run. Face-to-face appointments are available across Sheffield and South Yorkshire and across Peterborough and Cambridgeshire, with remote assessments available nationwide.

If any of this sounds familiar, it's worth getting in touch. Sometimes the most important thing is simply having someone take the whole picture seriously.