Who We Are | School of Imagination · Integrated Early Childhood Development
Inclusive preschool
Integrated therapy · Est. 2001
Tri-Valley · Dublin, CA
Enrolling now
Vogt Weekend · Jan 22–23, 2027
schoolofimagination.org About Who We Are
About School of Imagination

We built something much larger
than a preschool.

An integrated early childhood development system — serving families from first concern through kindergarten and beyond. Clinical care, inclusive education, and a community platform, all under one roof in the Tri-Valley since 2001.

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Where families go when they don't know where to turn.

For more than two decades, School of Imagination and Happy Talkers have been the Tri-Valley's trusted answer to one of the hardest questions a parent can face: What do we do next? We bring together clinical services, inclusive education, and a warm community under one roof — so no family has to navigate developmental challenges alone.

What we are

More than a preschool. Here's the full picture.

We're often described as a preschool. That's one part of a much larger story.

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A clinical hub
Happy Talkers — our clinical identity since 2001 — delivers speech therapy, occupational therapy, behavioral therapy (ABA), infant development, social skills programs, and ADOS diagnostics. We accept major commercial insurance and are vendorized through the Regional Center of the East Bay.
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An inclusive preschool
School of Imagination — our inclusive early childhood education program — is where children with and without disabilities learn together in small classes using a research-based, ESDM-aligned curriculum designed for kindergarten readiness.
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A coordinated care system
What makes us different is the integration. Our Clinical Leadership Council coordinates care across every discipline. Therapists, educators, and families work together — not in silos — so every child receives a unified plan, not a patchwork of disconnected services.
Our story

How we got here.

In 2001, Charlene Sigman — a speech-language pathologist, preschool director, and certified ESDM therapist — launched Happy Talkers from a rented home in Pleasanton. What began as a small effort to help children with special needs quickly consumed her family's house, with every room dedicated to helping children thrive.

"Where do we go? What do we do? Who can help our child?"

By 2003, demand had grown so much that Charlene and her family moved into a single bedroom to make room for more than 100 children each week. The families kept coming because the approach worked — and because no one else in the Tri-Valley was offering what she was building.

By 2008, Charlene expanded her vision to include School of Imagination, bringing inclusive early childhood education together with clinical services. In 2011, she and her husband Mitch Sigman partnered with the City of Dublin to open a permanent 12,000-square-foot center — a space built from the ground up to serve the whole child.

Today, that center is home to an integrated system that has served thousands of Tri-Valley families across more than two decades. The questions families ask haven't changed. Our ability to answer them has grown considerably.

2001
Clinical origin
Happy Talkers founded
Charlene launches from her Pleasanton home. Within months, 100+ children per week fill every room. The clinical name pediatricians and RCEB come to know and trust.
2008
Education
School of Imagination founded
Inclusive early childhood education joins the clinical mission — the first step toward a fully integrated system.
2011
Permanent home
12,000 sq ft center opens in Dublin
Charlene and Mitch partner with the City of Dublin to open a purpose-built center — education, therapy, and community under one roof.
2016
Community platform
Vogt Weekend launches
The annual Stephen Vogt Celebrity Benefit Weekend begins — bringing together community, celebrities, and supporters to fund SOI and Happy Talkers programs.
2021
Clinical expansion
Behavioral therapy (ABA) launches
ABA therapy added to the clinical model, serving children ages 2–5. Insurance credentialing and revenue cycle infrastructure expand across all disciplines.
2026
Now
Diagnostics launch · Full story told
ADOS-2 diagnostic evaluations launching in 2026 — completing a full integrated early childhood model. Happy Talkers positioned as the regional clinical hub it has always been. Next Vogt Weekend: Jan 22–23, 2027.
Mission, vision & values

What guides everything we do.

These aren't aspirational statements — they're the operating principles behind every clinical decision, every enrollment, and every community event.

Mission
To bring out the extraordinary in every child by providing integrated early childhood clinical care, inclusive education, and community support — so no family has to navigate developmental challenges alone.
Vision
A Tri-Valley where every child with a developmental concern has immediate access to coordinated, high-quality care — and where families are guided, not left to figure it out on their own.
Values
Integration — disciplines that coordinate, not silos that coexist
Access — insurance, RCEB, and scholarship support for every family
Inclusion — every child belongs, in the classroom and the clinic
Excellence — evidence-based practice, credentialed clinicians, measurable outcomes
Community — families, providers, and supporters as partners in every child's journey
Why families and providers choose us

Integrated care isn't our tagline. It's how we're built.

These are the real, operational reasons families and providers choose School of Imagination and Happy Talkers over other options in the Tri-Valley.

1
Services that talk to each other
Our Clinical Leadership Council coordinates care across speech, OT, ABA, and infant development — so your child's team moves together, not in separate directions.
2
Real insurance access
We accept most major commercial insurance plans and are fully vendorized through RCEB. Scholarship support is available. Cost should not be a barrier to early intervention.
3
Education and therapy together
Children in our inclusive preschool can access clinical services in the same building — educators and therapists collaborating on shared goals, not separate plans.
4
Support for the whole family
Parent education, navigation support, and a strong community of families who understand the journey — because children don't develop in isolation.
5
25 years of clinical experience
Happy Talkers has been a trusted partner to Tri-Valley pediatricians, school psychologists, and RCEB case managers since 2001. We're not new to this.
6
We have capacity — we are not full
We are actively welcoming new clinical referrals and preschool enrollments. If you've heard otherwise, please reach out — that perception is one of the things we're working hardest to correct.
For families
Ready to learn more or get started?
Whether you're exploring preschool enrollment or looking for clinical services for your child — we're here. No diagnosis needed to start.
Get started at happytalkers.org →
For providers
Looking for an integrated care partner?
Submit a referral online, fax to (925) 236-9712, or call (925) 829-9555. We respond within 1 business day.
Go to referral hub →