Bertram Elementary

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Administrative Team

Bonnie Sullivan - Principal 

I have been dedicated to Elementary Education for well over a decade. I spent seven years as a classroom teacher in grades 3rd , 4th, and 5th.  I have worked as an instructional coach, intervention specialist for grades K-2ndand most recently, served as an assistant principal and principal at Burnet Elementary and Shady Grove Elementary. I am honored to serve as the new principal at Bertram Elementary.


I grew up in the Dallas Area and graduated from Texas Christian University. Go Horn Frogs! My husband, Garth, and I moved to the Hill Country four years ago to put our roots down here. We have two children – a two year old boy and a 4 month old baby girl. I also have a 13 year old spunky, small and fluffy dog named Dolly!


In my free time, I love to be with my family and spend time outdoors. We also love to watch the Bulldogs play on Friday night. Go Bulldogs!


Finally, my advice to students is never let anyone tell you that you can’t follow your dreams. If you work hard and pursue your dreams, the sky is the limit. Having a college degree will make it easier and that work starts here at Bertram Elementary!


I am looking forward to a great year!

Kendell Luedtke - Assistant Principal
Kendell Luedtke will begin her first year as Assistant Principal at Bertram Elementary in 2017-2018. Before serving as Assistant Principal, Kendell was an Instructional Coach, Interventionist, and classroom teacher. Kendell graduated from Angelo State in San Angelo Texas, in 2006 with a Bachelor of Communication Degree and earned a Masters of Education Administration Degree from Texas Tech University in 2008. Kendell began her career in Education in San Angelo, Texas where she taught for three years. She has spent the last six years in Pflugerville ISD teaching 4th & 5th grades, being a K-5th interventionist, and an Instructional Coach. 
Kendell and her husband Austin Luedtke, are both originally from Lampasas,Texas and have three children, Ardyn, Beckett and Barrett. Ardyn will be in 2nd grade this year and Beckett is a big Kindergartner! Barrett is 2 and half years old and full of personality!
Kendell is very passionate about building relationships and being a part of children's growth. She takes pride in being a part of every child's education and helping them grow personally, academically, socially and emotionally. Kendell is proud and excited to be a part of the Bertram Family and is ready to meet all of the wonderful students and parents!