What is S2C (Spelling to Communicate)? A Guide for Parents

There Is More Going On Inside Your Child Than the World Can See

If you are the parent of a nonspeaking or minimally verbal child with autism, you have probably carried this feeling for a long time — a quiet, unshakeable knowing that your child understands far more than they can show. They react. They feel. They notice things. But the bridge between what they know and what they can express has felt impossibly far.

Spelling to Communicate (S2C) was designed to help build that bridge.

What Is S2C?

Spelling to Communicate, or S2C, is a motor-based approach to communication developed by Elizabeth Vosseller, a speech-language pathologist. S2C teaches nonspeaking and minimally verbal autistic individuals to point to letters on a letterboard as a means of reliable, independent communication.

The foundation of S2C is a simple but profound belief: that many nonspeaking autistic individuals have the intelligence and understanding to communicate, but face significant challenges with motor planning and regulation that prevent them from expressing what they know. S2C works to build the purposeful, reliable motor pathway needed to point to letters consistently and meaningfully.

S2C practitioners are trained and certified through I-ASC — the International Association for Spelling as Communication — the professional body that sets standards, provides training, and certifies practitioners globally.

What Makes S2C Different?

S2C places a particular emphasis on the motor side of communication. Many nonspeaking individuals with autism have what is sometimes called "motor dysregulation" — their body does not always do what their mind intends. They may reach for the wrong thing, struggle to initiate movement, or find that their motor actions feel disconnected from their thoughts.

S2C addresses this directly. Before spelling words and sentences, practitioners work with students on developing purposeful, regulated motor skills — learning to point to a target reliably. This foundational work is what S2C calls building the "motor pathway."

The approach unfolds in stages:

Stage 1 — Open/Close: Learning to open and close the hand purposefully.

Stage 2 — Point: Learning to point to a target with accuracy and intention.

Stage 3 — Letterboard: Using a laminated letterboard to point to letters and spell.

Stage 4 — Keyboard: Progressing to a keyboard for faster, more independent communication.

Each stage builds on the last. Progress is gradual and individualized — there is no single timeline.

What Does an S2C Session Look Like?

An S2C session is typically one-on-one with a trained practitioner. Here is what you can generally expect:

Motor warm-up. Sessions often begin with regulated movement and sensory support to help the student arrive in a ready state for communication work.

Letterboard work. The practitioner presents a letterboard — typically starting with a larger board and progressing to smaller ones — and the student points to letters to respond to prompts or express open thoughts.

Scaffolded support. In early stages, the practitioner provides prompting and co-regulation support. Over time, the goal is to reduce support and build toward fully independent spelling.

Academic and meaningful content. Like other spelling-based methods, S2C sessions are not just therapy exercises. Practitioners engage students with content that respects their intelligence — literature, science, history, personal topics that matter to the student.

For many families, the moment their child spells a full sentence — their own thought, in their own words — is among the most significant of their lives.

Who Is S2C For?

S2C is designed for individuals who:

• Are nonspeaking or minimally verbal
• Have been diagnosed with autism or a related condition
• Face challenges with motor planning, regulation, or both
• Have not yet found a reliable means of expressive communication

S2C has been used with children as young as three and with adults. It is not limited by age or by prior assumptions about a person's intellectual abilities. In fact, one of the most consistent findings reported by S2C families is that their child understands far more than anyone had realized.

How to Find an S2C Practitioner

S2C practitioners are trained and certified through I-ASC (International Association for Spelling as Communication). I-ASC maintains standards for practitioner training and provides a certification pathway for providers around the world.

The Lost Puzzle Piece lists certified S2C practitioners across the United States, with information on location, virtual availability, and the languages they serve.

[Search our directory to find an S2C practitioner near you →](/find-provider?method=S2C)

If there is no S2C provider in your immediate area, do not give up. Many I-ASC certified practitioners offer virtual sessions, and some families travel for initial intensives before continuing with remote support.

A Note on the Broader Community

S2C exists within a larger world of spelling-based communication approaches — including RPM (Rapid Prompting Method) and the Spellers Method. Each approach has its own methodology, training, and certifying body. What they share is a common belief: that nonspeaking individuals have something to say, and that the right tools and support can help them say it.

Families sometimes find their way to S2C after learning about these methods through personal networks, social media, or documentaries that have brought this community into wider view. However you found your way here, you are not alone in this search.

A Final Word

Your child has a voice. S2C is one path to help them use it.

You do not have to take anyone's word for it. Connect with S2C families. Listen to the people who communicate through letterboards. Talk to a practitioner. And then take the first step.

We built this directory because finding that practitioner should be the easy part.

[Find a certified S2C practitioner near you →](/find-provider?method=S2C)