Speech Sounds & Speech Clarity

The first job is separating speech clarity from language and communication, because the provision differs. Gather intelligibility information from more than one listener — class teacher, a member of staff who does not know the child well, and the family — and note the difference between them. That gap is often the most informative single piece of evidence.

• Who understands the child, in what settings, and how much of the time.
• Whether the pattern is consistent (the same sound always affected) or variable.
• Whether single words are clearer than connected speech.
• Whether understanding and vocabulary look age-appropriate when speech is taken out of the equation.
• Hearing history — otitis media, glue ear, grommets, last hearing check.
• Home languages, and which sounds occur in each.
• The child's own view of how talking is going.

The SEND Code of Practice places this in the communication and interaction area of need. Not every child with unclear speech needs to be on SEN support — many need well-made universal adjustments and time.

NHS children's speech and language therapy assesses and treats speech sound difficulties. Referral routes and thresholds vary by area, and in many areas families can self-refer. Bercow: Ten Years On documented long and highly variable waits in England — plan on the assumption that a referral is the start of a process, not a solution.

• Check the local referral route and criteria, and keep them somewhere staff can find them.
• Refer with description and examples; recorded speech samples, with consent, are often more useful than forms.
• Ask specifically what school should and should not do while waiting — including whether any sound-level practice is appropriate.
• When a programme arrives, agree who delivers it, how often, where, and how it is recorded. Short, frequent and consistent beats long and occasional.
• Feed classroom evidence back at review; therapists rarely see the child in a noisy room.

• Proportion of utterances understood by an unfamiliar adult — sampled, not measured to a decimal point.
• Frequency of voluntary contributions in class.
• Gap between spoken and written or practical demonstration of the same objective.
• Peer interaction at unstructured times.
• The child's own report of how talking feels.

Avoid making the number of sounds 'acquired' the headline measure. It is the least sensitive to what school actually controls.

1. Royal College of Speech and Language TherapistsProfessional guidance
   Speech sound disorders — clinical guidance (updated 2024)

   The UK professional reference point. Explains that 'speech sound disorder' is an umbrella term used when a child's speech is much harder to understand than other children of the same age speaking the same language, and that sub-types differ in cause and in what helps.

2. Royal College of Speech and Language TherapistsProfessional guidance
   Position paper on Childhood Apraxia of Speech (CAS) (2024)

   Relevant only to a small minority of children. Useful for understanding why a few children need specialist, high-frequency motor-speech input rather than general classroom support.

3. Speech and Language UKProfessional guidance
   Speech sounds (resource library for educators)

   Plain-English explanation for school staff, including the point that speech sounds are not letters — 'sheep' has five letters and three sounds.

4. Speech and Language UKProfessional guidance
   Ages and stages

   Typical development by age band, with the standing caveat that children reach these stages at different rates. Use as a reference point, never as a checklist to score a child against.

5. NHS (Berkshire Healthcare NHS Foundation Trust)Professional guidance
   Typical speech sound development

   NHS speech and language therapy advice on the order sounds usually emerge — early sounds such as b, m, d before later ones such as 'ch', 'th' and clusters. Local NHS services publish similar pages; referral routes vary by area.

6. NHSProfessional guidance
   Glue ear

   Common in young children and can affect hearing while it lasts. One reason a hearing check is a sensible first step when speech is unclear.

7. Department for EducationStatutory guidance
   SEND Code of Practice: 0 to 25 years (2015)

   Places speech, language and communication within the communication and interaction area of need, and sets out the graduated approach — assess, plan, do, review — schools must follow.

8. Department for EducationStatutory guidance
   Early years foundation stage statutory framework (current version)

   Communication and language is a prime area; settings must provide a language-rich environment and back-and-forth interaction.

9. Department for EducationProfessional guidance
   The reading framework: teaching the foundations of literacy (2021, updated 2023)

   Relevant because phonics teaching and assessment rest on hearing and producing sounds. It sets out how to teach and check phoneme–grapheme correspondence, which is where unclear speech can be misread as a phonics gap.

10. Education Endowment FoundationResearch summary
    Preparing for Literacy: improving communication, language and literacy in the early years (2018)

    Recommends high-quality adult–child interaction and developing children's speech, language and communication. It is about the language environment, not about treating speech sound difficulties — that sits with speech and language therapy.

11. Education Endowment FoundationResearch summary
    Improving Literacy in Key Stage 1 (2017, updated)

    Places phonological awareness and language capability among the foundations of early reading and writing.

12. I CAN and RCSLTResearch summary
    Bercow: Ten Years On — an independent review of provision for children and young people with SLCN in England (2018)

    Documents variable identification and long waits for speech and language therapy in England, and argues for communication being everybody's business rather than a specialist add-on.