How to Choose a Dyslexia Assessment Provider, Prepare for Your Test, and Understand the Process

Getting a dyslexia assessment is one of the most clarifying decisions a family or adult can make. Yet for most people, the path to that decision is tangled with uncertainty: Where do I even start? Who is qualified to assess? What will actually happen on the day? And how do I know if the report I receive will be worth anything?

This guide answers all of those questions in plain terms. It covers how to compare providers, how to prepare yourself or your child, and what to expect at every stage of the assessment process, from the first phone call to the final report.

Key takeaway: A dyslexia assessment is not a test you can pass or fail. It is a structured, evidence-based process designed to build a picture of how your brain learns, and to give you the tools to move forward with clarity.

How to Choose a Dyslexia Assessment Provider

The UK has a wide range of dyslexia assessment providers, from large national organisations to independent specialist assessors. Not all assessments are created equal, and the differences matter, particularly if you need the report for school access arrangements, Disabled Students' Allowance (DSA), or workplace reasonable adjustments under the Equality Act 2010.

Check for the Right Qualifications

This is the single most important factor. Under UK guidelines, a formal diagnostic dyslexia assessment can only be carried out by:

• A specialist teacher/assessor holding a current Assessment Practising Certificate (APC)

• A psychologist specialising in Specific Learning Difficulties (SpLD) registered with the Health and Care Professions Council (HCPC)

The APC is issued by SASC (the SpLD Assessment Standards Committee) and confirms that the assessor's practice meets current national standards. You can verify any assessor's credentials on the SASC website. If a provider cannot point you to a SASC-listed assessor, that is a significant red flag.

Understand What the Report Needs to Do

Before booking, be clear about why you need the assessment. The purpose shapes what the report must contain.

Purpose	What the report needs
School support / EHCP	Cognitive profile, literacy attainments, recommendations for provision
Exam Access Arrangements	Form 8 evidence (requires school to complete Part 1 first)
Disabled Students' Allowance (DSA)	Full diagnostic report meeting SASC guidelines
Workplace reasonable adjustments	Evidence of dyslexic profile under the Equality Act 2010
Personal clarity	Cognitive and learning profile with strengths-based recommendations

Asking a provider upfront whether their report format meets the requirements for your specific purpose will save you time and money.

Questions to Ask Any Provider Before Booking

A reputable provider will welcome these questions. If they cannot answer them clearly, look elsewhere.

1. Is your assessor SASC-listed and APC-qualified?

2. Does your report follow SASC guidelines?

3. Does your assessor hold a current DBS certificate?

4. How long will the assessment take?

5. When will I receive the written report, and in what format?

6. Do you offer online or in-person assessments, or both?

7. What happens if I need follow-up support after the assessment?

In-Person vs Online Assessments

Online dyslexia assessments have become a well-established and recognised option across the UK. A qualified assessor conducting an assessment via video call uses the same standardised tests and follows the same SASC guidelines as an in-person session. The report carries the same validity.

For many families and adults, an online assessment offers practical advantages: no travel, no unfamiliar environment for an anxious child, and greater flexibility for working adults. Find out more about how online dyslexia assessments work before deciding which format suits you.

The bottom line on provider choice: credentials first, then fit. The assessor's qualifications determine whether the report is valid. The assessor's communication style and approach determine whether the experience is positive.

How to Prepare for a Dyslexia Assessment

Good preparation makes a real difference to the quality of the assessment. The more context the assessor has before the session, the more accurately they can interpret what they observe on the day.

Gather Documents and Background Information

Most providers will send a background questionnaire before the assessment. Complete it thoroughly. In addition, try to gather:

• School reports from the last two to three years (for children)

• Any previous assessments, SENCO reports, or intervention records

• Examples of written work that illustrate the difficulties

• Notes on any family history of dyslexia or other learning differences

• Details of any previous support or tutoring received

For adults, useful background information includes academic history, any previous assessments, and a brief account of the specific challenges you face at work or in daily life.

Health Checks to Complete Beforehand

Two health factors can significantly affect assessment results if left unaddressed.

• Vision: Ensure the person being assessed has had a sight test within the last two years. Uncorrected vision problems can mimic or mask dyslexic difficulties.

• Hearing: An up-to-date hearing check is also advisable, as processing speed and phonological tasks are central to the assessment.

If glasses or hearing aids are normally worn, bring them on the day.

Preparing a Child for the Assessment

Children often feel anxious about assessments, particularly if they have already had difficult experiences around reading and writing at school. How you frame the session matters.

"You're going to meet someone who is really interested in how you learn. There are no right or wrong answers. It's not a test you can pass or fail. They just want to understand how your brain works so we can help you better."

A few practical steps that help:

• Tell the child what to expect: a conversation, some puzzles, some reading and writing tasks

• Avoid framing it as a big deal or something to worry about

• Ensure they have had a good night's sleep and a proper meal beforehand

• Bring a snack and a drink, as sessions typically last two to three hours

• Bring a small comfort item if the child is young or particularly anxious

Preparing as an Adult

For adults, the main preparation is practical and psychological.

• Arrive on time, or log on a few minutes early for an online session

• Bring any relevant documents (previous assessments, employment records, GP letters)

• Take your own refreshments for an in-person session; assessments typically run for three hours or more

• Know that it is entirely normal to find some tasks difficult. That is the point of the assessment.

The most important thing to remember: you cannot study for a dyslexia assessment. Trying to prepare your responses or practise tasks

What Happens During a Dyslexia Assessment

A diagnostic dyslexia assessment typically lasts between two and four hours, though some can run longer depending on the individual's needs and the purpose of the assessment. Here is what the process looks like from start to finish.

Stage 1: Background Conversation

The session usually begins with an informal conversation. The assessor will review the background questionnaire you completed beforehand and ask follow-up questions about developmental history, school or work experience, and the specific difficulties that prompted the referral.

For children, this conversation may involve the parent for part of the time before the child works with the assessor one-to-one. For adults, this stage is a collaborative discussion, not an interrogation.

Stage 2: Cognitive and Attainment Testing

This is the core of the assessment. The assessor will work through a series of standardised tests covering the key areas that form a dyslexic profile. These typically include:

Area tested	What it measures
Reading accuracy	Ability to decode words accurately
Reading speed and fluency	How quickly and smoothly text can be read
Spelling	Phonological encoding and pattern recognition
Writing	Composition, organisation, and mechanics
Phonological awareness	Ability to hear and manipulate sounds in words
Processing speed	How quickly the brain handles information
Working memory	Short-term retention and manipulation of information
Verbal and non-verbal reasoning	Underlying cognitive ability

The assessor uses nationally standardised tests, which means your results are compared against population norms for your age group. This is what gives the report its evidential weight.

Important: there is no single test for dyslexia. A diagnosis emerges from the pattern across all of these areas, not from any one score. A skilled assessor is looking for the distinctive profile that characterises dyslexia: typically, a significant gap between cognitive ability and literacy attainments, combined with specific weaknesses in phonological processing and working memory.

Stage 3: Observation and Qualitative Evidence

Alongside the standardised tests, a good assessor will observe how you or your child approaches tasks. Do they show signs of fatigue? Do they use compensatory strategies? Do they struggle with time pressure but perform well when allowed to work at their own pace? These observations add crucial context to the numerical scores.

Stage 4: Feedback at the End of the Session

At the end of the session, the assessor may offer some initial observations. However, they may not be in a position to give a formal diagnosis on the day. Scoring the tests, calculating standard scores, and writing a thorough report takes time. Do not be concerned if the assessor says they need to go away and analyse the results before reaching a conclusion.

What you should leave with: a sense that the assessor understood the individual, that the session covered a broad range of skills, and that you know when to expect the written report.

Understanding Your Dyslexia Assessment Report

The written report is the most tangible outcome of the assessment. It is the document that unlocks support, accommodations, and adjustments in educational and professional settings. Understanding what it should contain helps you evaluate its quality and use it effectively.

What a Good Report Includes

A diagnostic dyslexia report following SASC guidelines should cover:

• Background history: a summary of the developmental and educational context gathered during the assessment

• Test scores and standard scores: results presented with age-equivalent or standardised scores so they can be interpreted by schools, universities, and employers

• Cognitive profile: an analysis of strengths and weaknesses across the areas tested

• Diagnosis: a clear statement of whether the evidence supports a diagnosis of dyslexia (or another SpLD), and at what level of severity

• Recommendations: practical, specific suggestions for support in the individual's context, whether school, university, or workplace

The report should never just list scores. A high-quality report interprets the pattern of results, explains what they mean for the individual, and gives actionable guidance. If a report reads like a printout of numbers without analysis, that is a quality concern worth raising with the provider.

How Long Should It Take?

Turnaround times vary between providers. Standard turnaround is typically ten to fifteen working days. Some providers offer fast-track options with reports delivered within 24 to 48 hours for an additional fee. If a timeline matters to you, confirm it before booking.

What Happens After the Report

Receiving the report is not the end of the process; it is the beginning of the next chapter. Depending on what the report shows:

• If dyslexia is confirmed: share the report with your child's school or SENCO, your university's disability support service, or your employer's HR team. The report provides the evidence base for reasonable adjustments and additional support.

• If another SpLD is identified: the report may recommend further assessment for conditions such as ADHD, dyscalculia, or dyspraxia.

• If dyslexia is not confirmed: the report should still identify strengths and areas of difficulty and suggest appropriate next steps.

Many families and adults find it valuable to have a follow-up conversation with the assessor after reading the report, particularly if the findings raise new questions. A good provider builds this into their service rather than treating the report as the final word.

For children, the next step is often structured literacy support. For adults, it may be coaching focused on workplace strategies, organisation, and self-advocacy. Learn more about post-assessment support for children and adults to understand what the pathway forward can look like.

Common Questions About the Dyslexia Assessment Process

Can my child's school arrange an assessment?

Schools can refer children to local authority educational psychologists, but waiting times are often lengthy and availability varies significantly by area. Many families choose to arrange a private assessment directly with an independent specialist assessor to get a faster result. The NHS guidance on dyslexia diagnosis outlines both routes.

Does my GP need to refer me?

No. You can book a private dyslexia assessment directly with a qualified specialist without a GP referral. A referral is only needed if you are seeking assessment through NHS or local authority routes, which typically have longer waiting times.

What age can a child be assessed?

Most specialist assessors will carry out a full diagnostic assessment from age 8 upwards. For younger children, a learning profile assessment can identify areas of difficulty and provide targeted support recommendations without a formal diagnosis. At This Is Dyslexia, learning profile assessments for children aged 6 to 10 offer an evidence-based starting point for younger learners.

Is an online dyslexia assessment as valid as an in-person one?

Yes, provided it is conducted by a SASC-listed assessor using standardised tests. The format of delivery does not affect the validity of the diagnosis or the report. Read more about the benefits of an online dyslexia assessment to understand how the process works remotely.

What if the assessment does not confirm dyslexia?

A negative result is still a useful result. The assessment will identify what is and is not causing the difficulties, and the report will include recommendations regardless of the outcome. In some cases, the assessment may point towards a different SpLD or suggest further investigation. Clarity, in any direction, is more useful than uncertainty.

How much does a dyslexia assessment cost in the UK?

Private dyslexia assessments in the UK typically range from around £400 to £700 for a full diagnostic assessment, depending on the provider, the age of the person being assessed, and the complexity of the assessment. Some providers offer payment plans. If cost is a concern, it is worth asking about this at the enquiry stage.

Ready to Take the Next Step?

A dyslexia assessment is not just a test. It is the point at which uncertainty becomes clarity, and difficulty becomes something you can actually work with.

If you are ready to move forward, or simply want to talk through whether an assessment is the right step for you or your child, get in touch with This Is Dyslexia. Assessments are available in-person in Kent and online across the UK, conducted by Laura Gowers, an APC-qualified specialist assessor with over 23 years of experience.

You do not need a referral. You do not need to wait.

Assessments are available for children aged 6 and above and for adults of all ages. Fast-track reporting options are available for those who need results quickly.