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Hill Country Dyslexia Services has a highly qualified team of professional educational diagnosticians. They are passionate about identifying and getting thorough diagnostic evaluations completed for children.


Neuropsychological testing is the formal systematic assessment in the areas of; cognitive function, information processing, language, motor integration, learning (dyslexia, dysgraphia, and dyscalculia).


M.Ed., Educational, Diagnostician, PRED-# 1996

Alice Colvin

In-Person or Remote Testing

Alice has been a general education teacher, special education teacher, diagnostician, transition coordinator, ECI coordinator, and a Special Education Coordinator for several districts. The most meaningful part of her job is to help a struggling student and their families understand why they are having difficulties in school. Alice is from Houston and graduated from Texas Christian University (undergraduate degree), University of Houston (2nd undergraduate degree) and Houston Baptist University (two masters degrees). She is an avid learner and constantly growing in her profession.


Educational Diagnostician (Bilingual)

Delia Hernandez

In-Person or Remote Testing

Delia is an experienced, bilingual Educational Diagnostician for the State of Texas who is driven to collaborate in an environment that promotes individualized learning for children with disabilities. She received her Master’s degree in Special Education with a diagnostician certification from Texas State University in San Marcos, Texas.

Delia has been teaching since 1998. She taught first, second and third grades before becoming a dyslexia teacher. Delia believes that is important to create a positive and respectful relationship with every student, parent, and co-worker. She makes it her goal to provide students with a caring, supportive, and happy environment where all students can achieve their best. 


M. Ed. Educational Diagnostician, LDT, CALT

Samantha Nettles

In-Person or Remote Testing

Samantha Nettles is a Texas State Board Certified Educational Diagnostician and Certified Academic Language Therapist. Additionally, Samantha is a Licensed Dyslexia Therapist in Texas and holds a principal and teaching license in the state of Texas.  She believes in empowering students, parents, and educators with insights into dyslexia and related learning differences.

Please call to schedule a time to discuss your child’s needs at 512-648-2291 or fill out this online form.

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