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Our Staff

We believe that given the right support all students can thrive and learn.

Meet Our Dedicated Educational Team

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Stacy Ellis, MS

LEAD TEACHER

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Sarah Robertson

LEAD TEACHER

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Lynn Espinoza

LEAD TEACHER

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Kelsie Mattis

ASSISTANT TEACHER/

REGISTERED BEHAVIOR TECHNICIAN

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Kayson Oleen

ASSISTANT TEACHER

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Samuel Moore

ASSISTANT TEACHER

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Laura Smith

ASSISTANT TEACHER

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Jen Mattson, MA

LEAD TEACHER

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Julia Wohlfarth

LEAD TEACHER

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Rossana Canalizo

ASSISTANT TEACHER

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Karina Centeno

ASSISTANT TEACHER/

REGISTERED BEHAVIOR TECHNICIAN

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Madison Lambright

ASSISTANT TEACHER/REGISTERED BEHAVIOR TECHNICIAN

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Charlotte Kraushaar

ASSISTANT TEACHER/REGISTERED BEHAVIOR TECHNICIAN

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ASSISTANT TEACHER/REGISTERED BEHAVIOR TECHNICIAN

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Madeline Mucher

LEAD TEACHER

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Phil Espinoza

LEAD TEACHER

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Chelsey Cain

ASSISTANT TEACHER/

REGISTERED BEHAVIOR TECHNICIAN

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Levi McElhaney

ASSISTANT TEACHER

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Kristen Davis

ASSISTANT TEACHER

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Melissa Oberg

ASSISTANT TEACHER/REGISTERED BEHAVIOR TECHNICIAN

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ASSISTANT TEACHER/REGISTERED BEHAVIOR TECHNICIAN

Meet Our Dedicated Clinical Team

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Fabiola Vargas Londono, PhD, BCBA-D, LBA

BEHAVIOR ANALYST

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Kayla Jones

REGISTERED BEHAVIOR TECHNICIAN

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Kelsey Rice, M.Ed., BCBA

BEHAVIOR ANALYST

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Allison Cyr

REGISTERED BEHAVIOR TECHNICIAN

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Gabby Sullivan

REGISTERED BEHAVIOR TECHNICIAN

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Nora Williams, M.S., CCC-SLP

SPEECH THERAPIST

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Jessica Freeman, OTR

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OCCUPATIONAL THERAPIST

Administration

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Kara Huss, M. Ed., BCBA, LBA

EXECUTIVE DIRECTOR

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Rose Chalil, M.S., CCC-SLP

CO-CLINIC DIRECTOR /

SPEECH THERAPIST

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Makini Bridgewater

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DEVELOPMENT DIRECTOR

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Anna Alpaydin

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SCHOOL DIRECTOR

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Cassandra Stoneman, M. Ed., BCBA, LBA

CO-CLINIC DIRECTOR /

BEHAVIOR ANALYST

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Deanna Oleen, PHR

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DIRECTOR OF OPERATION

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Christina Sylva

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OFFICE MANAGER

Board of Directors

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Ryan Sheiner

BOARD CHAIR

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Brittany Cullison

BOARD OF DIRECTORS

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Vivek Kulkarni

BOARD OF DIRECTORS

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Michael DiMaggio

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BOARD OF DIRECTORS

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Mario Hebert

BOARD OF DIRECTORS

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Jenn Coulombe

BOARD OF DIRECTORS

Grateful for Granita

Granita is a 6-year-old, yellow lab/golden retriever mix who is trained as a working facility dog. Canine Companions for Independence breeds, raises, and trains assistance dogs before matching them and placing them in schools such as ours. Granita has been trained in over 40 commands and provides emotional support as well as direct therapy assistance throughout the school. She loves sunbathing and playing chase, and absolutely loves playing in whatever water she can find.  She likes having her back scratched by the students at William's and can frequently be found underneath their desks and tables.

© 2023 by William's School.

The William Mosing Center, d/b/a William’s School, is a nonprofit 501 (c)(3) organization. Your donations are fully tax-deductible to the extent allowable by law. William’s School admits students of any race, color, national and ethnic origin to all the rights, privileges, programs and activities generally accorded or made available to students at the school. It does not discriminate on the basis of race, color, national and ethnic origin in administration of its educational policies, admissions policies, scholarship and loan programs, and athletic and other school-administered programs.

Contact Us

5209 Duval Road

Austin, TX 78727

512-250-5700

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