How many PECS sessions does a child usually need?

Every child learns to communicate at their own pace — PECS isn't a fixed number of sessions, it's a journey that grows with your child.

In short

There is no fixed number of PECS sessions that suits every child — it depends on where your child is now, how often they practise, and how communication is woven into their day. PECS is structured into six teaching phases, from exchanging a single picture for something they want, through to building short sentences and commenting. Most children move through the early phases over weeks to several months of regular, consistent practice, and progress is fastest when families and therapists use it together, everywhere — not only in the therapy room.

What shapes the number of sessions

• Your child's starting point — a child already reaching or pointing may move through the first phases more quickly than one just beginning to learn that communication brings a response.
• Consistency and frequency — PECS works through many small, motivating opportunities each day. Children who practise across home, therapy and play tend to progress faster than those who only practise in one setting.
• The six phases — Phase 1 (making a single exchange) often clicks within a handful of well-set-up sessions; later phases (discriminating between pictures, building sentences, answering and commenting) naturally take longer and keep developing.
• Motivation matters — PECS is built around things your child genuinely wants. Strong, personal motivators speed learning; this is why therapists spend time discovering what truly delights your child.
• It's a stepping stone, not a ceiling — for many children PECS supports the emergence of speech and other communication, so the goal is functional communication, not a session count.

The honest answer most therapists give: think in terms of steady progress through phases, not a target number. A good therapist will review your child's progress regularly and adjust.

When to review with a clinician

Ask for a review if your child seems stuck at one phase for a long time, loses interest, or if you're unsure how to use PECS at home. A speech and language therapist can refine the motivators, the picture set and the teaching steps so progress restarts. PECS is one tool among several — your clinician will also consider whether other communication supports would help alongside it.

The Pinnacle way

AbilityScore® is part of Pinnacle’s developmental assessment. Diagnosis, where needed, requires an appropriately qualified healthcare professional — never from an app or a session count. From there, your child's communication profile guides whether PECS, and how many phases, fits them best, delivered through our speech and language therapy. Understand how your child's starting point is mapped in the AbilityScore® assessment, and explore more about how we support children's communication.

Trusted sources

American Speech-Language-Hearing Association guidance on augmentative and alternative communication (AAC) and picture-based systems; American Academy of Pediatrics (HealthyChildren.org) guidance on supporting early communication.

Next step — Want to know if PECS is right for your child and how to use it well? Book a communication assessment with a Pinnacle clinician.

This is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.