The Boy Who Stopped Speaking at School
A 6-year-old boy has been at school for 5 months. He speaks fluently at home in Bengali and English, answers questions, and plays boisterously with his younger sister. At school he has never spoken a word to teachers or peers, though he nods, points, and follows instructions. His teacher initially assumed a language delay; a screening shows age-appropriate receptive vocabulary and he writes simple words correctly. His parents say he spoke at his previous nursery 'after a few weeks.' He is not oppositional, does not have tics, and shows no repetitive routines. He cries on Sunday evenings and clings to his mother at the gate, but settles within 10 minutes. Hearing screening is normal.
1. Distinguish the plausible explanations for his silence and justify the most likely formulation, naming the features that rule alternatives out.
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Most likely: selective mutism. The core feature is a consistent failure to speak in specific social situations where speaking is expected, despite speaking in other situations, lasting more than one month (beyond the first month of school), with a documented capacity for normal language. He speaks fluently at home in two languages, follows instructions, and writes - so the language system is intact. The failure is situation-specific, not global.
What the history rules out.
- Language disorder or hearing loss: normal receptive vocabulary, correct writing, normal hearing screen, fluent home speech.
- Autism spectrum condition: no repetitive routines, no tics, social motivation is present (he plays, nods, points, seeks his mother), and he spoke at nursery after settling.
- Oppositional behaviour: he complies, follows instructions, and is not defiant; the silence is anxious, not hostile.
- Trauma or abuse: no disclosure, no regression in other domains, and the pattern began with school entry, not with a discrete event.
The anxiety link. Sunday-evening crying and gate-clinging indicate separation and social-evaluative anxiety. Selective mutism is best understood as an anxiety-driven freeze response in a setting where speech has become the feared stimulus. The nursery precedent is important: he spoke there 'after a few weeks,' which suggests the pattern is a slow-to-extinguish avoidance habit, not a fixed incapacity - and it gives a realistic prognosis.
Caution. The one-month criterion is met, but the formulation must still be reviewed if new features appear (regression, tics, or loss of home speech), which would change the picture.
2. Design a school-based plan. Specify who does what, what the teacher must stop doing, and how you would measure change over 8 weeks.
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Principle. Do not make speech the price of participation. The plan lowers the anxiety around speaking by shaping successive approximations, and it removes all pressure and public spotlighting.
Teacher: what to stop. No direct questions that require a verbal answer in front of the class; no 'we're all waiting for you'; no rewards contingent on speaking; no asking him to read aloud; no comparing him to peers. These raise the stakes and confirm speech as a threat.
Teacher: what to start. Seat him near a quiet, friendly peer. Use yes/no cards, pointing, and written responses initially. Ask questions in small groups or one-to-one first. Give him a defined, non-speaking role (handing out materials) so he has a secure social position. Praise participation, not volume.
Graded ladder (speech hierarchy). Week 1-2: non-verbal responses and mouthing words to a trusted peer. Week 3-4: whispered single words to that peer in a quiet corner. Week 5-6: whispered words to the teacher, then a short phrase in a small group. Week 7-8: normal-volume single words in a small group, with whole-class speech as a later goal, not an 8-week target.
Parents. Consistent, low-pressure practice at home with the same ladder, and a calm, brief goodbye ritual at the gate to reduce the clinging. Avoid making speech a battleground at home.
Measurement. Count (a) unprompted verbalisations per day by setting (peer, teacher, group), (b) time to settle at the gate in minutes, (c) teacher-rated distress on a simple 0-10 scale, and (d) number of non-verbal responses used as a fallback. Review at 4 and 8 weeks.
Escalation. If there is no movement by 8 weeks, refer for a specialist anxiety-focused intervention (for example, behavioural or CBT-based work). Medication is not a first-line option at this age and should not be raised with the family yet.