Boy posing to represent testing & evaluation.

About The Testing & Evaluation Center

The Winston Testing and Evaluation Center offers a comprehensive battery of psychological and psychoeducational tests to determine strengths and weaknesses, that contribute to challenges in learning and vocational activities.

The focus of testing can include:
  • investigation into intellectual/cognitive processes
  • academic ability
  • executive functioning
  • attention and concentration
  • anxiety
  • depression
  • self-esteem
  • personality
  • social skills
Possible outcomes include:
  • identification of giftedness
  • learning disabilities (including but not limited to dyslexia, dysgraphia and dyscalculia)
  • intellectual disability
  • autism
  • attention-deficit/hyperactivity disorder
  • anxiety
  • depression

Our Educational Diagnosticians and Licensed Specialists in School Psychology use standardized diagnostic tests to help determine the presence and intensity of learning differences. These measures of achievement, intelligence, language, learning styles, behavior, and social-emotional functioning are combined with background information, parent and teacher rating scales, and observations to develop individualized recommendations to support each client’s unique learning profile. Learning differences occur in people with wide ranges of intelligence and become apparent when a person has difficulty processing information because of a disorder in either a basic cognitive process, or as the result of functional impacts attributable to a related disorder. The well-rounded approach utilized at The Winston School Testing and Evaluation Center allows for flexibility to fully consider and investigate all potential areas of concern that are resulting in academic or vocational hardship.

We look forward to connecting with you to further explain the ways in which we are able to help you find answers, feel understood, and ultimately more forward empowered!

To learn more or inquire about testing at The Winston School, please call 214.691.6950.

Testing / Evaluation Faculty


Patty DiFilippo

Patty is an educational diagnostician. She completed her Bachelor’s Degree from Texas Christian University and Master’s Degree in Education and certification as an educational diagnostician from East Texas State University. She served as a special education teacher and educational diagnostician in the public school system for over 30 years, before joining The Winston School Testing and Evaluation Center staff in February of 2017. She has a special interest in working with elementary age students, but has a passion for helping students of all ages discover their strengths and unique abilities.

Susan Nipper - Educational DiagnosticianSusan Nipper

Susan is an Educational Diagnostician with 29 years of experience. She earned both her Bachelor’s and Master’s degrees from Vanderbilt University in Nashville, Tennessee.  She has worked in public and private educational settings teaching and evaluating students.  She began working at The Winston School Testing and Evaluation Center in January 2020. She is passionate about reading disorders, understanding the underlying neurological cause of learning differences, helping identify solutions, and connecting individuals to the right supports.