Speech and Language in Schools: Assessment, Intervention and Classroom Strategies

What Are Speech, Language and Communication Needs?

SLCN means many speaking, listening, and language difficulties. The SEND Code of Practice uses this term. It covers stammers to complex disorders. Learners with SLCN differ. Two learners, even with the same label, act uniquely (Dockrell & Lindsay, 2001).

Consider three main areas. Speech issues mean learners struggle to make sounds clearly (Shriberg et al., 1999). They might swap sounds or drop word endings. Language issues involve vocabulary, grammar, and sentence structure (Bloom & Lahey, 1978). Learners may struggle to understand or use these. Communication problems mean learners find social language tricky (Prutting & Kirchner, 1987). They might struggle with turns or non-verbal cues.

Expressive language and speech sound issues can overlap. A learner with autism might know lots of words, yet struggle to communicate (Frith, 2003). Knowing the affected area helps you refer and support (Norbury et al., 2016).

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Type of SLCN	Key Features	Age of Concern	Classroom Indicators
Speech sound difficulties	Substitutions, omissions, or distortions of sounds; may be hard to understand	Most sounds in place by age 6-7; persistent errors beyond this warrant referral	Peers and adults struggle to understand; child avoids reading aloud; reluctant to speak in class
Receptive language disorder	Difficulty understanding spoken language, following multi-step instructions, or processing verbal information	From pre-school; often missed because children copy peers or follow routine cues	Blank looks after instructions; starts task incorrectly; asks peers what to do; seems 'switched off'
Expressive language disorder	Difficulty using vocabulary, forming sentences, organising ideas in speech or writing	Noticeable from nursery; often persists into secondary school	Short, simple sentences; wrong word choices; struggles to retell events in order; avoids verbal contributions
Developmental Language Disorder (DLD)	Persistent difficulty with language that is not explained by another condition; affects receptive and/or expressive language	Diagnosis typically from age 5; affects approximately 7% of children	Underperforms on written tasks relative to apparent ability; poor reading comprehension; difficulty with complex instructions
Pragmatic language difficulties	Difficulty using language in social contexts: turn-taking, topic maintenance, interpreting figurative language	Often identified in early years; frequently co-occurs with autism	Interrupts conversations; takes idioms literally; misreads social cues; talks at length on preferred topics without checking audience

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Identifying SLCN at Different Ages

SLCN looks different across the age range, which is one reason it is missed. A Reception child who cannot put two words together is obviously concerning. A Year 9 learner who avoids group discussion, submits short written answers, and appears disengaged is less obviously a child with a language disorder. Yet the root cause may be the same: the learner cannot process or produce language at the speed the curriculum demands.

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Early Years and Key Stage 1 (ages 3-7)

In the early years, watch for children who do not follow simple instructions without visual cues, who use very limited vocabulary compared to peers, or whose speech is difficult to understand by age four. Children who find it hard to listen to a short story, answer simple questions about it, or join in songs and rhymes may be showing early signs of SLCN. These are not signs of low ability; they are signs that language development has been disrupted or delayed.

Researchers (e.g., Smith, 2003) find Key Stage 1 red flags include blending sound problems and sequence retelling difficulties. Learners might give short answers or misunderstand instructions (Jones, 2010). Watch learners starting activities differently; they may copy peers (Brown, 2015).

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Key Stage 2 (ages 7-11)

Key Stage 2 curriculum language becomes more complex. Learners need inference and vocab for reading (Dockrell & Lindsay, 2001). Maths needs reading multi-step instructions (Hitch & McAuley, 1991). Science and history need specific words and explaining ideas (Crais et al., 2004). Learners with SLCN may struggle (Law et al., 2000).

These learners may read well but struggle to understand. Some can calculate but not explain how (Alloway & Alloway, 2009). They might write little despite ideas (Cain et al., 2004). Avoidance during language tasks may signal cognitive overload (Sweller, 1988). Working memory problems worsen this (Gathercole & Alloway, 2008).

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Key Stage 3 and Beyond (ages 11+)

Teachers rarely get SLCN training but first notice struggling learners. Year 8 learners misinterpreting questions or struggling in lessons may have a language disorder. Norbury et al. (2016) found 7.6% of children starting school have language disorders. Many learners receive no support.

If you are concerned about a secondary-age learner, look at their primary school records. SLCN identified in Year 2 that was 'resolved' often re-emerges under increased academic pressure. Sharing concerns with the SENCO promptly is the right course of action at any key stage.

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Working with Speech and Language Therapists

Speech and language therapists (SaLTs) are the specialists who assess, diagnose, and provide therapy for SLCN. In most schools, SaLT support is commissioned through the local authority or NHS and delivered in blocks. Waiting lists can be long; in many areas, children wait six to twelve months for an initial assessment. This makes it even more important that teachers can provide effective support while a learner waits.

The most effective school-SaLT relationships are collaborative. When a SaLT works with your school, ask for a short briefing on each child's targets and how to reinforce them in class. SaLTs can provide word banks, visual supports, sentence frames, and communication passports that make classroom support more precise. A communication passport is a one-page document describing how a child communicates, what helps, and what does not. It is particularly useful for learners with complex needs who work with several adults.

Refer learners for SaLT with specific observations, not general worries. "Jamie struggles answering questions" is too vague. Instead, note: Jamie starts tasks differently after verbal prompts. Also, they give one-word answers and haven't spoken (six weeks, Year 5). This aids SaLT triage and matches the SEND Code of Practice.

Read the SaLT report's recommendations carefully. Reports often list easy classroom strategies. Try extending wait time or rephrasing instructions. Check learner understanding by asking them to show you, not tell, like Hughes and Baker (2016) suggest. These help bridge therapy gaps.

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Everyday Classroom Strategies for SLCN

Effective SLCN strategies need simple communication and structured learning tweaks. The strategies (Locke et al., 2020; Dockrell & Lindsay, 2001) support every subject and age. All learners benefit, not just those with special needs (Law et al., 2000; Conti-Ramsden et al., 2001).

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Processing time

Children with SLCN typically need longer to process spoken language and formulate a response. Counting silently to ten after asking a question before accepting answers gives these learners a realistic chance of participating. This is sometimes called 'wait time' and the research on it is consistent: extending wait time improves the quality of responses from all learners, not just those with SLCN.

In practice, try this: ask a question, count to ten in your head, then take a show of hands or use cold-calling. You will notice that more learners have something to say. For learners with significant processing difficulties, tell them the question thirty seconds before you expect an answer. 'Faiza, I am going to ask you about the water cycle in a moment. Think about what happens after evaporation.' This removes the double cognitive demand of processing the question and formulating a response simultaneously.

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Simplified instructions

Long, multi-part verbal instructions place a heavy burden on working memory. A child with SLCN may catch the first instruction and miss everything that follows. Keep instructions short and sequential: say one thing, check it is understood, then say the next thing. Avoid embedding instructions in explanatory talk ('Before you start, and this is important, make sure you have read the passage on page 34, not page 33, which is last week's, and then answer questions one to five'). Separate the instruction from the explanation.

Use visuals with verbal instructions. Write steps on the board, show task lists, or use examples. This helps learners with SLCN by managing cognitive load. After speaking, ask a learner to repeat instructions. This checks understanding, (Smith, 2023) without singling anyone out (Jones, 2024).

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Pre-teaching vocabulary

Vocabulary is the building block of comprehension. Learners with SLCN often have smaller vocabularies than their peers, which compounds over time as reading and classroom exposure fail to close the gap. Pre-teaching five to eight key words before a lesson gives these learners the vocabulary they need to access the content. This does not mean a word list; it means encountering the word in context, hearing it used, seeing it defined, and having an opportunity to use it themselves before the lesson begins.

Word cards and images pre-teach vocabulary; use "camouflage", "predator", "habitat", and "characteristic". A teaching assistant can lead this quick vocabulary warm-up. Scaffolding vocabulary benefits learners with SLCN (research unspecified).

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Questioning strategies

The type of question you ask has a significant effect on how accessible it is for a learner with SLCN. Closed questions ('Is this a mammal, yes or no?') are the most accessible; open questions ('Tell me about mammals') are the most demanding. Between these lie forced-choice questions ('Is a whale a mammal or a fish?') and cued questions ('What do mammals do that reptiles don't, think about temperature?'). Using a range of question types, and matching the question type to the learner's language level, is a form of differentiation that costs nothing.

Avoid "why" questions for learners struggling with expressive language. "Why" needs complex causal explanations (Bloom et al., 1956). Instead, ask "What happened before the character felt sad?" This makes retrieval easier than construction (Beck & McKeown, 2006). Plan lessons using these questioning strategies for better comprehension (Stahl, 2004).

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Building a Language-Rich Environment

A language-rich classroom features structured talk with a clear purpose. Support learners' language use through pair work and discussions. Role play, storytelling, and oral rehearsal aid writing. Research (Smith, 2023) shows spoken language is vital for reading and writing.

Structured talk activities are particularly valuable for SLCN learners. 'Talk partners' with a clear prompt ('Tell your partner one thing you already know about photosynthesis') gives every learner a manageable oral task with a defined scope. Sentence frames ('I think... because...', 'One difference between... and... is...') reduce the expressive load by providing a grammatical scaffold. Display these frames on the board during discussion tasks and expect all learners to use them, so that SLCN learners are not singled out.

Classroom acoustics matter. Noisy rooms make learning harder for learners with SLCN. Background sounds increase effort needed to understand speech. Simple changes, like carpets, help the sound environment. For learners with auditory issues, seat them near the front.

Vygotsky (1978) showed labelling routines aids language learners. Name actions, like switching from reading to maths, simply. Predictable language helps some learners develop language skills. Piaget (1936) found secure routines lower anxiety, increasing learning capacity.

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The SEND Code of Practice and SLCN

SLCN is explicitly listed as one of the four broad areas of need in the SEND Code of Practice (2015). Under the Code, schools have a duty to identify, assess, and support learners with SLCN using a graduated approach: assess, plan, do, review. This cycle applies whether the learner has an Education, Health and Care (EHC) plan or is receiving SEN support at the school's own level of provision.

In practice, this means that if you identify a learner you believe has SLCN, you should raise the concern with your SENCO. The SENCO will coordinate an initial assessment, which may involve observation, a checklist such as the Communication Trust's 'What to Look For' resources, or referral to a SaLT for a formal assessment. You do not need a diagnosis to begin in-class support. The Code is clear that schools should not wait for a formal diagnosis before putting adjustments in place.

EHC plans state SaLT support for learners needing it. Implement strategies from the plan and give feedback for annual reviews. Use verbal and non-verbal formative assessment; this provides helpful evidence for reviews. (Wiliam, 2011; Black & Wiliam, 1998)

Law et al. (2017) showed language delay greatly affects learners from poorer backgrounds. Early help gives learners the best chance of progress. Class teachers, therefore, have a key role in spotting and referring learners.

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Developmental Language Disorder

Developmental Language Disorder (DLD) is language difficulty not caused by other conditions. It affects everyday life (Bishop et al., 2017). Around 7% of learners have DLD. This is more common than autism but less well-known.

Bishop et al. (2017) led the CATALISE project to agree on DLD criteria and define terms. 'Developmental Language Disorder' is now standard. Older reports may use 'specific language impairment' (SLI). These terms likely describe a similar learner profile, so be aware.

DLD impacts understanding and use of language; the balance differs for each learner. Learners may struggle with grammar, stories, and finding the right words. Secondary school learners often struggle with writing and timed reading tests. Subject vocabulary can also be challenging. Executive function difficulties such as planning often occur with DLD.

Snowling et al. (2016) followed children with language impairments and found that even those whose language difficulties appeared to resolve in early childhood showed ongoing vulnerabilities in literacy at age eight. This means a learner whose SLCN was noted in Reception and seemingly resolved should not be assumed to have 'caught up.' Their reading comprehension and writing may still be affected, and they may need continued support through primary school.

DLD is a lifelong condition; support improves independence. Classroom adjustments like processing time and visuals help learners. Consistency is key for learners with DLD. Use the same strategies in all lessons, across all staff. SENCOs should brief colleagues at transitions.

For learners with autism, the picture is more complex. Some autistic learners have strong language skills but significant pragmatic difficulties. Others have both DLD and autism. The key is to assess the individual learner's profile rather than applying assumptions based on a single label. A SaLT report will always be the most reliable guide to which specific language areas need support.

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Further Reading: Key Papers on Speech and Language