Middle School Staff

Harry Dyas

Harry Dyas has a Bachelor of Science from Texas Tech University, where he majored in Sociology. Harry gained extensive experience while working for charter behavioral hospitals as a drug and alcohol youth counselor. Through a friend, he found his way to Vanguard where he has continued to work with youth for over 19 years.

Sabrina Galvan

Sabrina Galvan is a state licensed and certified middle school teacher. She has a Master’s Degree in secondary education with an English specialization and is in her fourth year here at Vanguard. As our Middle School team lead, Sabrina is committed to providing a quality education to our students both therapeutically and academically.

Betsy Leal

Betsy graduated from Texas State University in San Marcos with a Bachelor in Science in Interdisciplinary Studies and a minor in Psychology. She is a certified EC-12 Special Education teacher, as well as being certified in ESL. Betsy has worked in education since graduating from college in 2007. She has taught drop-out recovery and in self-contained Functional Academics and Structured Teach classrooms, and has also been an Instructional Design Facilitator and a Director of First Impressions. Building relationships is Betsy’s favorite part of her job and she is excited to partner with Vanguard families to foster happy, confident students.


Parent Education Classes
November 17th & 19th

Thanksgiving Feasts
Thursday, November 19th

Thanksgiving Break/No School
November 23-27

Vanguard Preparatory School

4240 Sigma Road Dallas, TX 75244

Accredited By Southern Association Of Colleges And Schools - AdvancED | TEA Approved

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(phone) (972) 404-1616
(fax) (972) 404-1641

(email) info@vanguardprepschool.com