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, 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

Dr. Brandy Taylor

Director of Educational Assessments & Psychological Services

Licensed Specialist in School Psychology

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Tamala Close

Tamala Hutchinson Close

Director of Speech and Related Services

Speech-Language Pathologist

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Dr. Shanda Riley

Director of Counseling Services


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Dr. Riley is responsible for providing individualized counseling services to charter and public school students while overseeing a team of counselors. With over 20 years of experience as a licensed clinical social worker and licensed professional counselor, Dr. Riley has worked in various settings, including K-12 public education, medical and mental health hospitals, foster care, mental health agencies, and group practice.

Dr. Riley received her BA in Psychology from the University of California at Los Angeles, her MS in Social Work from California State University, Long Beach, and her Ph.D. in Counselor Education and Supervision from Texas A&M University-Commerce.

Her leadership skills have enabled her to implement initiatives to improve counseling services to ensure that each child receives the support they need to reach their maximum potential.

Dr. Shanda Riley is a native of California and the mother of two sons, Steven and Christian.

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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