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Evidence Guide
16 min read

Dyslexia

Dyslexia is about accurate, fluent word reading and spelling — not reversed letters or a visual learning style. This guide separates what is known from what is myth, and sets out the teaching and adjustments that actually help.

Reading time
16 min read
Age range
All primary (EYFS–KS2)
Evidence level
High
An open book resting on a wooden primary school table beside a pencil and reading glasses in soft window light.
Written for families

Plain English, no jargon. You don't need a teaching background to use this — just read the parts that feel useful and skip the rest. If something raises a question, your child's teacher or SENDCO is the best next step.

OverviewFor parents

What dyslexia is

Dyslexia is a specific learning difficulty that mainly affects accurate and fluent word reading and spelling. The 2009 Rose report, which shaped how English schools think about it, describes it as a continuum rather than a category — there is no sharp line where difficulty becomes dyslexia — and identifies difficulties with phonological awareness, verbal memory and processing speed as commonly associated features.

Phonological awareness is the ability to hear and work with the sounds inside spoken words: hearing that "cat" starts with /k/, that "clap" has four sounds, that "brick" and "trick" rhyme. It is the skill that makes phonics usable, and for many children with dyslexia it is where the difficulty starts.

The core of it

For most children with dyslexia, the bottleneck is at the level of the word — recognising it accurately and quickly — rather than at the level of ideas, reasoning or understanding.

MoreFor parents

Myths worth clearing out first

  • It is not about seeing letters backwards. Reversing letters is common in young children generally, and is not the defining feature.
  • It has nothing to do with intelligence. Children across the whole range of ability can have dyslexia.
  • "Dyslexic children are visual learners" is not supported by evidence. Learning-styles theory has been repeatedly tested and not upheld.
  • Coloured overlays and tinted lenses are not established as an effective treatment for dyslexia; the evidence is weak and mixed.
  • There is no single font that works for everyone; "dyslexia fonts" have not been shown to reliably improve reading.
  • It is not a "different learning style". It is a difficulty with specific skills, and those skills can be taught.
  • It is not caused by lack of effort, lack of reading at home, or poor parenting.
OverviewFor parents

What you might notice

  • Reading that is slow, effortful or inaccurate, even after a lot of practice.
  • Guessing at words from the first letter or the picture.
  • Spelling the same word several different ways on one page.
  • Difficulty hearing and playing with sounds in words — rhyme, syllables, first sounds.
  • Learning letter sounds, then losing them again.
  • Reading that improves in the short term and slips back over a holiday.
  • Written work far below what they can tell you out loud.
  • Avoidance: losing the book bag, needing the toilet at reading time, saying they are stupid.
  • Exhaustion after school, out of proportion to the day.
Difficulty reading is not automatically dyslexia

Reading develops at different rates, and difficulties can come from interrupted schooling, missed phonics teaching, hearing problems including glue ear, vision, a language difficulty, attention difficulties, or English being an additional language. All of these deserve the same first response: check the ordinary explanations, and teach well.

MoreFor parents

Strengths and the confidence problem

Many children with dyslexia have strong spoken vocabulary, good reasoning, strong verbal comprehension, creativity and determination — sometimes considerable determination, because they have been working harder than everyone else for years. It is worth being honest here: research does not support the idea that dyslexia reliably confers special talents. What it does support is that these children are commonly underestimated.

The confidence damage often outlasts the reading difficulty. A child who concludes at seven that they are stupid can still be carrying it at seventeen, long after they can read. Protecting how a child sees themselves is not a soft extra; it is part of the intervention.

AssessmentFor parents

Assessment: what it does and does not tell you

A formal assessment is usually carried out by an educational psychologist or a specialist assessor. It should produce a detailed profile of reading, spelling, phonological skills and related areas — and, crucially, what to teach next. The BPS report on dyslexia and psychological assessment argues exactly this: the purpose is a useful description, not simply awarding or withholding a label.

  • A diagnosis can explain a pattern, and can support access arrangements later in schooling.
  • It does not, by itself, change what good teaching looks like.
  • Schools do not need a diagnosis to provide structured literacy support.
  • Availability of NHS or local authority assessment varies; private assessment is common but should still be from an appropriately qualified assessor.
  • If your child is not making progress despite good teaching, that is the trigger for a conversation — not the label.
OverviewFor parents

What helps at home

Keep reading aloud to them

What it is: reading books above their reading level, for pleasure, with no questions afterwards. Why: it builds vocabulary, comprehension and a reason to care about reading while decoding catches up.

Short and daily beats long and occasional

What it is: ten focused minutes most days rather than an hour at the weekend. Why: reading skill responds to frequent, distributed practice.

Re-read the same book

What it is: reading a familiar text several times. Why: repeated reading is one of the better-supported ways to build fluency, and it feels successful.

Play with sounds, not just letters

What it is: rhyming, clapping syllables, "what's the first sound in…", changing one sound in a word. Why: it works on the underlying skill, and it can be done in the car.

Separate the writing from the thinking

What it is: letting them tell you the ideas, or scribing for them, and doing the spelling separately. Why: their ideas should not be limited by their spelling.

Use audiobooks freely

What it is: audiobooks alongside reading practice, not instead of it. Why: they keep vocabulary, story and enjoyment growing while decoding is still hard.

Stop before it becomes a fight

What it is: ending a session while it is still going well. Why: the long-term risk is not slow progress, it is a child who decides reading is not for them.

Be careful what you buy

There is a large market in dyslexia products. Coloured overlays, special fonts, eye-tracking exercises, balance and movement programmes, and brain-training apps are all widely sold and none is well supported by evidence as a treatment for dyslexia. Structured, explicit literacy teaching is the thing with the strongest evidence, and it is usually free at school.

ResearchFor parents

Evidence & sources

The teaching does not wait for the label

A child who is struggling to read needs high-quality, structured teaching now. That is true before assessment, during a wait, if the assessment concludes dyslexia, and if it does not. The value of an assessment is a clearer profile and, sometimes, access to arrangements and services — not permission to start teaching properly.

What this guide is, and is not

This is an educational resource. It does not identify or diagnose dyslexia; formal assessment is usually carried out by an educational psychologist or a specialist assessor with an appropriate practising certificate. It is also worth saying plainly that the boundary between dyslexia and other reading difficulties is genuinely debated among researchers. What is not debated is what helps: the teaching is broadly the same whether or not a child has a label.

  1. NHSProfessional guidance
    Dyslexia in children

    Plain-English NHS information for families on what dyslexia is, what is commonly noticed, and where to go for help.

  2. Sir Jim Rose / Department for Children, Schools and FamiliesProfessional guidance
    Identifying and Teaching Children and Young People with Dyslexia and Literacy Difficulties (2009)

    The independent report that shaped English practice: dyslexia as difficulties in accurate and fluent word reading and spelling, best understood as a continuum rather than a category with a clear cut-off.

  3. British Psychological SocietyProfessional guidance
    Dyslexia, Literacy and Psychological Assessment (1999, updated 2005)

    The BPS working party report for educational psychologists. Important for why assessment should describe literacy difficulties and what to teach, rather than only award or withhold a label.

  4. Education Endowment FoundationResearch summary
    Improving Literacy in Key Stage 1 — guidance report (2017, updated 2020)

    Recommendations on developing language, phonological awareness, systematic phonics, fluency and targeted support for struggling readers.

  5. Education Endowment FoundationResearch summary
    Improving Literacy in Key Stage 2 — guidance report (2017, second edition 2021)

    Reading fluency, vocabulary, comprehension strategies, writing, and structured intervention for pupils who have fallen behind.

  6. Education Endowment FoundationResearch summary
    Phonics — Teaching and Learning Toolkit

    Rated high impact for very low cost, based on very extensive evidence, with the largest effects for pupils who are struggling with early reading.

  7. Education Endowment FoundationResearch summary
    Special Educational Needs in Mainstream Schools — guidance report (2020, updated 2021)

    High-quality teaching first, careful scaffolding, and cautious deployment of teaching assistants and technology.

  8. Department for Education / University College LondonResearch summary
    Identifying and supporting children and young people with cognition and learning needs: a rapid evidence review (September 2025)

    DfE-commissioned UCL review. Carries an explicit disclaimer that it is not an endorsement and does not reflect government policy.

  9. Department for EducationResearch summary
    Neurodivergence Task and Finish Group: report — recommendations for mainstream education (February 2026)

    Independent recommendations to DfE, including timely identification of strengths and needs in the setting rather than reliance on diagnostic queues.

  10. Department for EducationStatutory guidance
    SEND Code of Practice: 0 to 25 years (2015)

    Current statutory guidance. Specific learning difficulties, including dyslexia, sit within cognition and learning; provision follows identified need.

Supporting School
Curious how school approaches dyslexia?

The professional Evidence Library shows the same ideas written for teachers, SENDCOs and school leaders.

Open the Evidence Library
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Where to go next.

A calm handful of next steps — not a checklist. Follow whichever thread is most useful right now.

For the classroom

What school is doing.

See the same evidence translated for teachers, so home and school can pull in the same direction.

Same category

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