Signs of Dyslexia in Teenagers: Understanding Difficulties and Finding Support

By secondary school, reading and spelling difficulties can be easy to mistake for a lack of effort. A teenager may avoid homework, leave assignments until the last minute or say that they don’t care about school. Sometimes, behind those behaviours is a young person who finds the work difficult and doesn’t know how to explain why.

Other teenagers work very hard to keep up. They may achieve good results, but spend considerably longer on their work than anyone realises.

If you are wondering whether your teenager has dyslexia, it helps to look beyond grades. How manageable does learning feel? How much support do they need? And what is it doing to their confidence?

Why might dyslexia become more noticeable in secondary school?

Some young people reach secondary school without their difficulties being fully recognised. They may have developed ways of managing, received considerable help at home or made enough progress for concerns to become less visible.

Secondary school brings different demands. There are longer texts, more unfamiliar vocabulary, several teachers and greater expectations for independent work. Students may need to read instructions, listen to explanations and take notes within the same lesson.

A teenager who previously managed may begin to find that their usual approaches take too long or require too much effort. This does not mean that dyslexia has suddenly developed. The increased demands may have made existing difficulties more apparent.

What signs of dyslexia might you notice in a teenager?

Dyslexia primarily affects the development of reading and spelling skills. Its effects vary, and no single behaviour establishes a diagnosis.

Reading is slow or takes considerable effort

Your teenager may read accurately but need more time to get through a chapter, worksheet or exam question. Unfamiliar words may interrupt their reading, particularly in subjects with specialist vocabulary.

They might understand the topic well when someone explains it, yet find accessing the same information through a textbook much harder.

Spelling remains difficult

Spelling difficulties may persist despite years of practice. Your teenager might spell a word correctly in one sentence and differently in another, or spend a long time checking words while writing.

Spellcheck can help, but it does not always resolve the difficulty. They may struggle to choose between suggested words or notice when a correctly spelt word is the wrong one for the sentence.

Written tasks take longer than expected

Reading the question, planning an answer, spelling words and checking the finished work can place several demands on a student.

Your teenager may have plenty to say about a topic but produce less written work than expected. However, differences between spoken and written performance are not specific to dyslexia and need to be understood alongside the wider evidence.

Homework involves a lot of hidden support

Perhaps you read questions aloud, help interpret instructions or check every paragraph. That support may make the finished work look more independent than it was.

It is useful for school to know what happens at home. The amount of help needed can be as informative as the final mark.

Reading and spelling tasks are avoided

A teenager may avoid reading aloud, become reluctant to start homework or choose activities that involve less written work.

Avoidance can have many explanations. Rather than assuming they are being difficult, try to find out which part of the task feels uncomfortable or unmanageable.

Can a teenager have dyslexia and still get good grades?

Yes. Good grades do not, by themselves, rule out dyslexia.

Some teenagers have developed effective ways of managing their difficulties. They may spend extra time preparing, use technology or receive substantial support. Their understanding of a subject may also help them perform well despite persistent reading or spelling difficulties.

Equally, good grades combined with stress or slow work do not automatically indicate dyslexia. An assessment considers the history, current difficulties, literacy skills and wider pattern of evidence.

The important point is that attainment does not tell us everything about the experience of learning.

What about memory, organisation and attention?

Some teenagers with dyslexia also find aspects of memory, organisation or attention difficult. However, these difficulties are not unique to dyslexia and should not be used as a shortcut to identifying it.

For example, difficulty following instructions might relate to the amount of information given, unfamiliar vocabulary, attention, language understanding or memory demands.

Dyslexia can also co-occur with other developmental differences, including ADHD and developmental language disorder (DLD). These can occur separately too.

Understanding the full picture helps ensure that support addresses the teenager’s actual needs, rather than attributing every difficulty to dyslexia.

How can these experiences affect confidence?

By adolescence, young people may have spent years comparing themselves with their peers. They might believe that everyone else finds learning easier or that their difficulties mean they are less capable.

Some become anxious about making mistakes. Others stop asking for help because they feel embarrassed or worry about drawing attention to themselves.

I place a great deal of importance on self-understanding and self-esteem. A young person needs to know that a reading or spelling difficulty does not determine their intelligence, effort or worth.

An explanation can help them make sense of their experiences. It should also leave room for their interests, ambitions and everything else that makes them who they are.

How should I talk to my teenager about possible dyslexia?

Choose a calm moment and begin with their experience.

You might ask:

• “Which parts of schoolwork take the most effort?”

• “What helps when you get stuck?”

• “Is there anything you wish your teachers understood?”

• “How do you feel about the amount of time homework takes?”

Listen before suggesting solutions. They may be worried about an assessment, concerned about being treated differently or simply relieved that someone has noticed.

Explain that an assessment is a way of understanding their learning needs. Avoid promising a diagnosis or suggesting that it will solve every difficulty.

Include your teenager in decisions about support. An approach is more likely to be useful if they understand its purpose and feel comfortable using it.

What support can help at secondary school?

Support should be matched to the individual and reviewed to see whether it helps. School does not need to wait for a formal diagnosis before responding to identified learning needs.

Make reading more accessible

When the aim is to learn subject content, text-to-speech or audio versions of material may help a student access information without every task depending on independent reading.

This can sit alongside appropriate teaching to develop reading skills. Accessing the curriculum and improving reading are both important.

Reduce unnecessary copying

Providing lesson notes or key information can allow a student to concentrate on the explanation rather than trying to copy and listen simultaneously.

Support written work

A clear planning framework, a model answer or a discussion before writing may help a teenager organise their response.

Typing, speech-to-text and spelling tools may also be worth trialling. Students need time to learn how to use these effectively, including how to check the resulting text.

Make instructions manageable

Break longer tasks into clear stages and provide instructions in a form the student can refer back to. Check understanding without putting them on the spot in front of the class.

Continue targeted literacy teaching where needed

Older learners can still benefit from explicit, structured teaching of reading and spelling. Support should address their current skills and use age-appropriate materials.

Technology and classroom adjustments should not replace literacy teaching when that teaching is needed.

What should I discuss with school?

Contact the SENCo and share specific examples, including the time homework takes and the support provided at home.

Ask what teachers have noticed across subjects, what support is already in place and how its effectiveness is being reviewed.

Agree a small number of practical changes and a date to review them. Include your teenager’s views: a strategy that seems helpful to adults may be difficult or uncomfortable for them to use.

If exams are approaching, discuss access arrangements with school early. A diagnosis of dyslexia does not automatically entitle a student to extra time or another arrangement. The school or college must follow the relevant requirements and consider evidence of need and the student’s usual way of working.

When might a dyslexia assessment help?

A diagnostic assessment may be helpful when reading or spelling difficulties persist, when the effort involved is affecting everyday learning, or when a clearer understanding is needed to guide support.

The assessment brings together developmental and educational history, current concerns, observations and standardised test results. It considers the overall evidence rather than relying on one score or a checklist of signs.

At Lexety Education, my aim is to explain the findings clearly and provide recommendations that are relevant to the young person’s circumstances. Whether or not dyslexia is identified, their difficulties deserve to be understood.

For many teenagers, having their experiences taken seriously is an important part of the process.

Concerned about your teenager’s progress?

Finding a helpful way forward

If your teenager is finding learning difficult, you do not need to wait until their grades fall before raising your concerns.

Start by listening to their experience, discussing their needs with school and considering what would make learning more manageable.

You can also explore my free courses, videos and self-help guides to learn more about dyslexia and supporting learning.

Dyslexia often becomes more noticeable as schoolwork gets harder, and it's never too late to find out. If you're concerned about a teenager, read about dyslexia assessment for young people in Cornwall, or book a free call to talk it through.