972 243-4102


Meet the Team


Dr. Davenport recognized many charter schools were not SPED knowledgeable nor did they have the funds or talent to provide SPED services. Diagnostic Assessment Services, Inc. (DAS) was born.

DAS remains a woman-owned business. Dr. Davenport continues to serve as CEO and Founder. Our leadership team consists of highly educated professionals. They understand SPED law, best practices, and their specialization is all woven together with a heart to serve.


Clinical Directors are responsible for program expansion, staff training, professional development, special education compliance, assessment, and service development. They collaborate with campus administration and leadership to improve special education services and classroom facilitation for students receiving services.  

Brandy Taylor-Dede

Gaylynn Clevenger EdS, LPC-S, ATR-BC

Director of Educational Assessments & Psychological Services

Email Gaylynn

I am a native Texan having grown up in Abilene, Tx. I attended North Texas State University where I received a Bachelor’s degree in Art Education. I also have a Masters in Art Therapy from Vermont College and an Educational Specialist degree in Educational Leadership with a concentration in Special Education Leadership. I have worked in public education for several years as a Teacher, Educational Diagnostician, related service Counselor, Assistant Director of Special Education and as a Director of Special Education in San Antonio ISD and Del Valle ISD. I currently reside in Wimberley, Texas and enjoy quick access to both the Austin and San Antonio metro areas.

I feel passionately that all students can learn and as educators we should set a high bar for achievement. I value a student-centered approach to the assessment and IEP processes. I enjoy working with and being a part of a strong team that puts services to kids first!

Tamala Close

Tamala Hutchinson Close

Director of Speech and Related Services

Speech-Language Pathologist

Email Tamala

As the Director of Speech & Related Services, Tamala Close is responsible for facilitating exemplary ST, PT, OT, AI, VI, and O/M assessments, consultations, and interventions. She diligently collaborates with campus staff to meet each student’s unique need for these outlined services.

Jason Hennessey

Jason Hennessey

Director of Business Operations


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As Director of Business Operations, Jason is responsible for establishing contracts with new and existing clients and overseeing Accounts Payable/Receivable. He works closely with the Business Office and Campus Coordinators to ensure a seamless process between service delivery, invoicing, and payment.

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