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Dyscalculia Support at School: What Your Child Is Entitled To, From Maths Interventions to Exam Access

Dyscalculia support at school should start as soon as a child's difficulty with numbers is holding them back, whether or not anyone has used the word dyscalculia yet. It is a specific learning difficulty that affects how a child understands numbers and quantities, not their general intelligence, and in England it is a special educational need the school must respond to under the SEND Code of Practice. This page explains what dyscalculia looks like in class, what SEN support should include, how assessment works, and what is and is not possible in exams.

What dyscalculia is, and what it looks like at school

In 2025 SASC, the body that sets standards for specific learning difficulty assessments in the UK, updated its definition. It describes a specific learning difficulty in mathematics as a set of processing difficulties that affects learning arithmetic and other areas of maths, and dyscalculia as the form marked by a pronounced and persistent difficulty with numerical magnitude: a weak sense of how big or small numbers and quantities are. The British Dyslexia Association summary notes that it often appears alongside dyslexia, ADHD, developmental language disorder and dyspraxia, and that maths anxiety commonly comes with it but is not on its own a sign of it.

In practice, signs a teacher or parent might notice include:

• Counting on fingers long after classmates have stopped, and losing track when counting.
• Difficulty saying which of two numbers is bigger, or estimating a rough answer.
• Confusing place value, such as reading 501 as fifty-one, or reversing digits.
• Learning a number fact one day and having lost it the next.
• Trouble with money, telling the time and following the steps of a written method.
• Strong avoidance of maths, or distress before tests.

Lots of children find maths hard for other reasons, including gaps in teaching or anxiety on its own. What marks dyscalculia out is that the difficulty is persistent and does not close with good ordinary teaching and a short period of catch-up support.

Support starts with need, not diagnosis

Under the SEND Code of Practice, a school must use its best endeavours to meet a child's special educational needs, and it does not need a diagnosis to start. If the class teacher and SENCO agree your child has a need, they should place them on the SEN register and begin SEN support, which runs on a cycle of assess, plan, do and review. You should be told, and invited to help set and review targets, usually each term. Our guide to SEN support vs an EHCP explains the two levels.

How dyscalculia is assessed

Unlike dyspraxia or autism, dyscalculia is not normally diagnosed by a doctor. It is identified through an educational assessment by a specialist teacher who holds an Assessment Practising Certificate, or by an educational psychologist. Some schools use a screening test first; a screener can flag a likely difficulty but is not a diagnosis. A full assessment looks at number sense, calculation, reasoning, memory and processing speed, and should rule out other explanations.

Some local authorities fund assessments through their educational psychology service; many families pay privately. If you go private, make sure the assessor liaises with the school, because a private report can only be used as evidence for exam access arrangements if the assessor has done so. Whatever route you take, the report is most useful when it gives the school concrete recommendations to build into SEN support.

What good classroom support looks like

Building number sense

• Concrete and visual resources, such as counters, cubes, bead strings, number lines and place value charts, used for longer than for other children.
• Topics taught in small steps and revisited often, rather than covered once and left.
• Estimation practice: is the answer about 10, about 100 or about 1,000?

Calculation and recall

• A times table square or number fact card on the desk for lessons where recall is not what is being taught.
• Worked examples to refer back to, and the same written method used consistently across classes.
• Jottings and diagrams allowed in all work.

Interventions

• Regular small-group or one-to-one sessions with a trained adult, focused on the specific gaps the assessment found.
• Clear entry and exit points: what the intervention aims to achieve and how progress will be measured.
• Sessions timed so the child does not always miss the same subject they enjoy.

Confidence

• No timed tests or quick-fire questions in front of the class.
• Marks and praise for method and reasoning, not just the final answer.
• Fewer questions done well, rather than a full worksheet done badly.

Number difficulties also reach beyond maths lessons. Science, geography graphs, food technology, timetables and money on trips all need numbers, so every teacher should know about the adjustments, not only the maths department.

Reasonable adjustments and the Equality Act

If dyscalculia has a substantial and long-term effect on day-to-day activities, your child may count as disabled under the Equality Act 2010, and the school then has a duty to make reasonable adjustments so they are not put at a substantial disadvantage. That duty sits alongside SEN support. Our page on SEND rights at school explains how the two overlap.

Tests and exams

For GCSEs and A levels, access arrangements are set by the Joint Council for Qualifications (JCQ), which lists dyscalculia among cognition and learning needs. Arrangements that can help include extra time, a reader for the wording of questions, supervised rest breaks and a separate room. Extra time needs evidence from an assessment carried out no earlier than the start of Year 9, recorded on JCQ's Form 8, and the arrangement must reflect how your child normally works in class. Plan it from Year 9 or 10, not the month before exams.

One thing parents often ask for is not available: a calculator on a non-calculator paper. Access arrangements change how a student sits an exam, not what the exam assesses, so a calculator can only be used where every candidate is allowed one. See the JCQ access arrangements page for the current regulations, and our GCSE exam dates 2027 page for the timetable. For key stage 2 SATs and the Year 4 multiplication tables check, schools can apply for access arrangements under Standards and Testing Agency rules.

When to ask for an EHC needs assessment

Most children with dyscalculia are supported through SEN support. If your child is still not making progress after the school has put well-planned support in place over time, particularly where dyscalculia sits alongside other needs, you or the school can ask the local authority for an EHC needs assessment. Our guides to the EHCP and how to apply cover the process.

Questions to ask at your next meeting

• What exactly is my child finding hard in maths, and what have you tried so far?
• Has my child had, or can they have, a specialist assessment?
• What intervention is in place, who delivers it, how often, and how will we know it is working?
• Can my child use a number square, number line or fact card in lessons?
• Do teachers in science and other subjects know about the adjustments?
• When should we start the evidence for exam access arrangements?

For other needs, see our pages on dyslexia, dyspraxia and ADHD support, or return to the Schools Insight homepage.

Sources: British Dyslexia Association, SASC definition of a specific learning difficulty in mathematics (2025); DfE, SEND Code of Practice; JCQ, access arrangements.