The world's only global home for sandtray therapists.
IAST connects practitioners across every country, credential, and career stage. Join thousands of sandtray therapists who no longer have to do this work alone.
"No longer will sandtray therapists be cut off from others because of issues like economics and geography. Through IAST, you know that you've got a home."Amy Flaherty — Founder, International Association for Sandtray Therapy
Built by a therapist who felt the isolation firsthand.
IAST founder Amy Flaherty knows what it means to be tired. Soul-crushing, in-your-bones exhausted after a long day of home visits, school sessions, and being fully present for every child who needs you. She built IAST so that feeling could end.
IAST is a nonprofit organization dedicated to spreading the love and power of sandtray therapy to all. We train mental health therapists through the lens of interpersonal neurobiology in the sandtray. We are inclusive of every approach, every background, and every stage of practice.
This is not a join-and-pay-a-fee organization. We are action-focused because the world needs the healing power of sandtray. After you join, you find out what that actually means.
Join. Act. Change.
Three steps that actually mean something. No runaround, no gatekeeping.
Become a member of the only global professional association built specifically for sandtray therapists. Connect with practitioners across every continent, access training resources, and pick up your IAST member credentials.
Use the tools, trainings, and community IAST provides to strengthen your skills and expand your practice. Pursue the International Certified Sandtray Therapist (ICST) credential. Show up in your community with greater confidence.
Change yourself first, then watch the world change around you. IAST exists because sandtray therapy changes lives. Together, we are joining hands to change the world, one sandtray at a time.
What it means to be part of this community
Everything a sandtray therapist needs in one place.
Membership is the start. Credentialing, training, community, and advocacy are what IAST is actually about.
Professional Membership
Join the world's only global professional home for sandtray therapists. Membership includes access to a worldwide practitioner network, member directory, and the full suite of IAST resources.
Become a member →ICST Credentialing
Earn the International Certified Sandtray Therapist credential. The ICST is the gold standard for practitioners committed to sandtray as a core clinical methodology. Renew annually to stay current.
Learn about ICST →Training Through IPNB
We train mental health therapists through the lens of interpersonal neurobiology in the sandtray. Our curriculum is designed for real clinical work, grounded in current neuroscience and relational theory.
View upcoming trainings →Global Community
Connect with practitioners in every time zone. Share cases, get consultation, find supervision, and stop feeling like the only person in the room who loves this work the way you do.
Join the community →Sandtray Scribe & Resources
Access the Sandtray Scribe publication, clinical articles, research, and member-exclusive tools designed to advance your sandtray knowledge and support your ongoing development.
Browse resources →Sandtray Summit
Our annual event brings the global sandtray community together for live training, CE hours, expert speakers, and peer connection. The Summit is where the IAST mission becomes a room full of people.
Visit sandtraysummit.com →
A method that holds what words alone cannot.
Sandtray therapy gives clients a way to express, explore, and process experiences that language struggles to reach. For children, for trauma, for the full range of human struggle, sandtray meets people where they are.
IAST exists to make sure every therapist who wants to practice sandtray has the training, credentials, and community to do it well.
Join us today →Therapists from every corner of the world, finally together.
"I had been practicing sandtray in isolation for years. IAST changed that completely. I now have colleagues, consultation, and credentials that actually mean something."IAST Member — United States
"The training through interpersonal neurobiology gave me a framework that changed how I see every session. My clients feel the difference, and so do I."ICST Credentialed Therapist — International Member
"For the first time I felt like I was part of something bigger than my own practice. IAST gave me community when I didn't know how much I needed it."IAST Member — Community Practitioner
Grab your spot in the global sandtray movement.
Membership supports a nonprofit mission. You get credentials, training, community, and a place where the work you do is understood.
We are here and we answer.
Questions about membership, the ICST credential, upcoming trainings, or anything else. Reach us directly.