Can dyslexia affect spelling but not reading?

Yes — a dyslexic child may learn to read accurately while spelling stays hard. The 2025 Delphi definition calls reading fluency and spelling ‘key markers’; accurate or compensated reading does not rule dyslexia out.

What this pattern can mean

Dyslexia is a set of processing difficulties that affect learning to read and spell. It does not require every part of reading to be weak. The British Dyslexia Association's 2025 definition says that difficulties in reading fluency and spelling are key markers across languages. That wording does not exclude a child who recognises words accurately. Taken alongside the BDA's guidance that many dyslexic people learn to read well while spelling difficulty persists, it supports looking beyond accuracy at fluency, spelling and effort. A child may take longer to read unfamiliar text, tire quickly, or lose fluency when the work becomes harder.

Look beyond the reading age on a school report. A child who scores well on familiar words may still stumble over new words, read slowly under time pressure or avoid reading aloud. Accurate reading can hide how much effort the task costs.

Why spelling can stay difficult

Reading and spelling ask the brain to do different jobs. When reading, your child can recognise a whole word and use the sentence around it as a clue. Spelling runs the process in reverse: they must hold the sounds in mind, choose letters for them and remember irregular word patterns. There is less context to rescue a guess.

The British Dyslexia Association says that many dyslexic people learn to read well with the right teaching, while spelling difficulty may persist throughout life. This is linked to differences in phonological processing (working with the sounds in words) and memory. The NHS also lists written work with many spelling mistakes as a possible sign of dyslexia. One sign alone cannot confirm a diagnosis, but good reading accuracy does not rule dyslexia out.

Could it be dysgraphia instead?

Dysgraphia is a term used for persistent difficulty with writing. It may involve handwriting, letter formation, written expression or spelling. It is not interchangeable with dyslexia, and the two can overlap. An NHS dysgraphia factsheet describes difficulties with the physical and thought processes involved in writing, including handwriting, spelling and expressing ideas, and says dysgraphia may co-occur with dyslexia. If your child's word-level reading, reading fluency and awareness of speech sounds are all secure, ask the assessor to look more widely at handwriting and written-language skills rather than assuming dyslexia.

What school can do now

Ask the school's SENDCO (the teacher responsible for special educational needs) to examine spelling patterns, reading fluency, unfamiliar-word reading and the effort your child uses. Bring a few dated pieces of independent writing. They often reveal more than a weekly spelling-test score because they show what your child can retrieve while also planning a sentence.

In England, a diagnosis is not required for SEN Support. The legal test in section 20 of the Children and Families Act 2014 is whether your child has a significantly greater difficulty in learning than most children of the same age and whether that calls for special educational provision. Section 21 defines that provision as educational or training provision that is additional to, or different from, that generally made for others of the same age (section 21, Children and Families Act 2014). Persistent spelling difficulty may meet the section 20 test even when reading accuracy is age-appropriate. See also how dyslexia can affect learning.

This page is general information, not clinical or legal advice.