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The Arbor Team


JuliAnna Jelinek

Executive Director

Previous to assuming this role, she served as The Arbor’s Chief Development Officer for two years. As Executive Director, JuliAnna is responsible for overall management of The Arbor, including operations, brand management, business development, and public engagement. Prior to joining The Arbor, JuliAnna spent over seven years in business development and fundraising for public policy and advocacy groups in Arizona, California, and Washington D.C. JuliAnna considers it one of her greatest joys in life to have landed at The Arbor and to serve such a dedicated community of Board members, incredible staff, and the most amazing students and parents around. When she’s not at her Arbor home, JuliAnna can be found at her house home-schooling and chasing her three young kids around while drinking copious amounts of caffeine. She loves the outdoors and the Texas Hill Country is her happy place.

Tricia Bingham

Director of Education

Previous to assuming this role, Tricia served as a Lead Teacher for The Arbor for three years. As Director of Education, she is now responsible for leading the teaching staff and implementing best practices in curriculum and education programs at The Arbor. Tricia has her Master’s in Curriculum and Instruction and has 17 years of education experience with children with special needs – one of her favorite parts about working at The Arbor is getting to know each student and their families because this has truly become her second family! Tricia is also certified in assistive technology for children with special needs, and considers it such a privilege to get to support our amazing teachers in the work that they do in the classrooms! When she’s not at the Arbor, you can find her going on “adventures” (like taking a trip to Lowe’s) with her husband and  two little boys or going on a Saturday morning run that somehow always ends at the breakfast taco shop!

Katy Sproule

Director of People Operations

As Director of People Operations, Katy is responsible for overseeing all efforts as they relate to treating and serving our staff with the greatest care and cultivating a rich sense of community among our teacher and administrative teams. Prior to joining The Arbor, Katy worked in various industries including space medicine, project management, and a nonprofit organization. Now, she is so excited about joining The Arbor family! Katy enjoys spending time with her husband and their three school-age children, preferably near a pool, a lake or the beach!

Morgan DeBeir

Business and Facilities Manager

As Business Manager, Morgan is responsible for accounting, compliance, and human resources. Morgan has over 25 years in managerial roles ranging from large corporations to small operations. He has obtained a degree in Computer Science and is A+ and MCP certified. Morgan first found The Arbor as a parent and has a deep passion for The Arbor School. Morgan is an avid motorcyclist and musician. He owns his own studio and works with songwriters across the country. He shares his passion for motorcycling with his autistic son, where you can find them traveling the back roads of Texas almost every weekend. When he isn’t writing or riding, he is catching up with the latest anime with his daughter.

Emily Miller

Grants and Outreach Manager

Emily assists in writing grant proposals, planning special events, developing digital and print materials, and more! Prior to joining The Arbor in 2017, she spent over three years working in education and customer-relation offices. Emily brings with her a passion for the special needs community. While The Arbor is one of her favorite places to be, she also loves spending time with her family and taking long road trips – especially during springtime when flowers are in full bloom!

Cassidy Rask

Administrative Assistant

As Administrative Assistant, Cassidy serves The Arbor community so that our students, families, and staff have all they need to have their best day ever on campus! From making that perfect cup of morning coffee, to keeping the office running smoothly, planning dedicated events to spoil our teaching staff, and acting as the first line of communication for existing and perspective families – Cassidy’s reach extends to every aspect of our campus. Cassidy began with The Arbor in July of 2022, has loved joining The Arbor family, and is excited to continue to serve as The Arbor grows and flourishes. When at home Cassidy enjoys spending time with her husband, her two young boys, and is expecting a sweet baby girl this fall. She also loves expressing herself through art and enjoys weaving, watercolor painting, and embroidery. She loves to travel, and the mountains are her happy place.


Sonia Arreaga

Lead Teacher

Ms. Sonia has been with The Arbor nearly since its founding! She graduated from Houston Baptist University with a Bachelor of Arts degree in Education. During her college years, she worked part-time at The Arbor as an assistant teacher before joining the staff as a lead teacher. While she focuses on her students’ well-being, she desires that their parents may in turn find hope, practical help, and guidance at The Arbor. She takes great joy in watching her students successfully master their individualized goals and she has proudly watched many of her former students grow and succeed through The Arbor’s program.

Alisa Berkovich

Lead Teacher

“I am always learning from my students. They amaze me constantly and I love seeing the world through their eyes and listening to their ideas!” Ms. Alisa has over 15 years of experience working with children in schools in Austin, Houston, and Washington, DC. Her passion for teaching began early on. Her mom was a teacher, and growing up, she spent a lot of time in her classroom and learned so much about education. Ms. Alisa finds it very rewarding to watch her students grow, build confidence, and become more independent. She is very excited to be part of the new secondary program and work with her students on both academic goals and life skills. In her spare time, you’ll find her at an art museum or planting flowers in her garden.

Dayana Gray

Lead Teacher

Ms. Dayana was born in Peru and brings with her a background in education with an emphasis in special education and intellectual disabilities. While in Peru, she worked with special needs kids for five years. Ms. Dayana believes in creating a fun and positive learning environment and is a firm believer that keeping a strong open line of communication between home and school leads to sustained success. In her spare time, Ms. Dayana loves to travel and be outdoors, hiking and biking with her son and super cute pup!

Maggy Herrmann

Lead Teacher

“Watching my students discover, succeed, and learn something new is truly my favorite part of every day!” Ms. Maggy was born in Columbia and brings with her an educational background in psychology. She has been working at The Arbor for almost five years. She says that every day, she is thankful for having the opportunity to guide and teach young children. She strives to create a safe place for her kids to grow in a positive, fun environment that encourages and motivates them to achieve their goals. When she’s not working, she likes working out with her husband and spending time at home with her dog and taking care of her plants.

Amy Huffman

Lead Teacher

“I absolutely love this school!” Ms. Amy is happy to be at The Arbor for her sixth year! In 2008, she received her Bachelor of Science degree in Interdisciplinary Studies with a minor in Special Education. She has experience as both a life-skills and PPCD teacher before joining The Arbor family. She is passionate about teaching children and defying the odds that were set against her students. This is what brings hope to so many families that come through her doors, and that is one of the best rewards!

Keisha Lee

Lead Teacher

Ms. Keisha has been at The Arbor for nearly 15 years! She is very passionate about the children and families that she serves. It is her personal mission to ensure that skills learned in the classroom are transferred and carried out in the home. Her goal is for her students to have community awareness and be present and actively part of as many family and community events as possible! Outside of The Arbor, she loves to stay healthy and fit to keep up with her very active boys!

Aqeela Manzar

Lead Teacher

Ms. Aqeela has 36 years of experience teaching children with special needs. After receiving her Masters in Psychology in 1983, she dedicated herself to several different organizations and schools in Pakistan for children with special needs – even including the Special Olympics!  Ms. Aqeela has now been with The Arbor for over 10 years. For Ms. Aqeela, this is not “just a job,” it is something that she is called to do! With her unwavering patience and compassion, she feels that she was created to help those who need it most. In her own words, “When I see the light in the eyes of my students and their parents, I feel that I was able to make a difference in their life and that gives me a feeling of fulfillment every day.”

Purdeep Matharu

Lead Teacher

Ms. Purdeep was born and raised in the U.K. She taught special needs children in the U.K. for four years and she even taught English to students in India for a year (she’s trilingual!). Now she has been teaching at The Arbor for over 25 years. She is a loving, caring, fun, supportive, organized, and energetic teacher who loves to bake on the weekends and spend time with her family and dogs. Her goal is to teach all of her students to their fullest potential and to be successful and as independent as possible. Ms. Purdeep is always ready for a challenge in the classroom and has overcome many through the years. She is passionate about helping others and is driven to provide the very best education to her students.

Deidre Nieto

Lead Teacher

Ms. Deidre is always ready to have fun! She has nearly 15 years of experience in education, working with children from infancy through 12 years old. She has been a lead teacher at The Arbor for four years. She has training as a registered behavioral therapist and an ABA therapist, and is passionately driven to provide an ABA-structured, loving, positive environment for all of the students and teachers. She lives by her favorite quote from Napoleon Hill, “you become what you think about,” and this drives her stellar work ethic in and out of the classroom!


Karen Picture

Karen Johnson

Occupational Therapist

Ms. Karen joined The Arbor team in 2015, and she loves working with the students twice a week! She has experience in a variety of pediatric settings since graduating as an Occupational Therapist, and she is trained in pediatric NDT and has her certification in Ashtanga Yoga. Along with many other therapeutic techniques, she uses yoga theories regularly when treating clients to help relax or arouse their bodies in preparation for therapy and to strengthen and elongate muscles. Some fun facts are that she loves summers on the East Cost, spending time with family, throwing great parties, and hunting for vintage treasures!

The Arbor School

Lauri Dalton

Physical Therapist

Ms. Lauri joined The Arbor in 2022 and has since loved working with the students twice a week. She received her Masters in Physical Therapy in 2002 from the University of Tennessee and is NDT trained. She is a strong believer that playing is a child’s job and incorporates play into all of her sessions. She loves working with the teachers to incorporate physical therapy activities in the students’ daily schedule. Some fun facts are that she loves the beautiful beaches on the gulf coast of Florida and spends a lot of time there. She also loves reading, movies, live music, hanging out with friends, and spending time with her family – including her husband, son, daughter, and 2 very spoiled dogs!


Debra Martinez, Board Chair
John Daly, Chairman Emeritus
Melissa Judd
Justin Leonard
Jennifer Moore
Christina Morse
Katelin Pollock
Neil Potter
Suzanne Speak
Kristen Stedham
Nathan Stedham
Wade Turner
Tiffany Tyler


The Arbor is committed to recruiting dedicated, creative, and passionate people who will share in our drive to provide the best educational program possible for children with special needs.

We are currently seeking applications for the following positions:

If you would like to apply for any of the above positions, please fill out the contact form and select “Employment” to send a message. Or you may send your résumé and cover letter outlining your interests and abilities to:

The Arbor School
Attn: Katy Sproule, Director of People Operations
1919 Knoll Street
Houston, Texas 77080