For families of nonspeaking children
Your child has a voice.
Help them find it.
The Lost Puzzle Piece is the only directory of certified RPM, S2C, and Spellers Method providers for nonspeaking and minimally verbal autistic children.
162+
Certified Providers
35
States Covered
1 in 36
Children with Autism
Free
To Search
Three Methods, One Goal
Spelling-based communication for nonspeaking individuals
Each method uses letterboards and motor-based techniques to help nonspeaking and minimally verbal autistic individuals spell out their thoughts. Different approaches, same belief: your child has something to say.
Rapid Prompting Method (RPM)
Developed by Soma Mukhopadhyay
RPM uses letterboards, stencils, and keyboards to teach nonspeaking individuals to spell their thoughts. It assumes competence and treats every person as an intelligent individual with things to say.
Certified by HALO (Helping Autism through Learning Outreach)
Learn more about RPM →Spelling to Communicate (S2C)
Developed by Elizabeth Vosseller
S2C is a motor-based approach that teaches purposeful motor skills needed for pointing to letters on a letterboard to spell as a means of communication. It focuses on building reliable motor pathways.
Certified by I-ASC (International Association for Spelling as Communication)
Learn more about S2C →The Spellers Method
Developed by Dana Johnson
The Spellers Method integrates spelling-based communication with sensory and motor support. Practitioners work through Spellers Centers to help individuals develop reliable communication skills.
Training through Spellers Centers (Tampa, Atlanta, Charleston)
Find a Spellers provider →“I always had things to say. I just needed a way to say them.”
— A speller, as told through a letterboard
Find a Provider Near You
Browse our directory of 162 certified RPM, S2C, and Spellers Method providers across 35 states.
Don't see your state? Browse virtual providers who serve families nationwide.
Why This Directory Matters
Finding a spelling-based communication provider shouldn't require months of digging through old blog posts and Facebook groups.
Hard to Find
Certified spelling-based communication providers are scattered across the country with no central, up-to-date directory. Until now.
Time-Sensitive
Early access to communication methods matters enormously. Every month counts. We make the search faster.
Built by a Parent
We know what it's like to search. This directory was built by a family who has lived it.
Learn More
View all articles →7 min read
What is RPM (Rapid Prompting Method)? A Guide for Parents
A compassionate guide to Rapid Prompting Method (RPM) for parents of nonverbal or minimally verbal autistic children. Learn what RPM is, what a session looks like, and how to find a provider near you.
6 min read
What is a Speller? Understanding the Nonspeaking Autism Community
Learn about the 'speller' community — nonspeaking and minimally speaking autistic individuals who communicate through letterboards. What this means, why it matters, and how to support your child.
7 min read
What is S2C (Spelling to Communicate)? A Guide for Parents
A compassionate guide to Spelling to Communicate (S2C) for parents of nonspeaking or minimally verbal autistic children. Learn what S2C is, how it works, and how to find a certified I-ASC practitioner.
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