Bertram Elementary

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Administrative Team

Bonnie Sullivan - Principal 

I have been dedicated to Elementary Education for well over a decade.  As a classroom teacher, I taught  3rd , 4th, and 5th grade.  I have worked as an instructional coach, intervention specialist for grades K-2ndassistant principal and most recently, served as principal at  Shady Grove Elementary in BCISD. I am  truly 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 an infant daughter.  I also have a 13 year old spunky 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
I have to begin by saying that I thoroughly enjoyed getting to know Bertram's traditions, community, and families during my first year as Assistant Principal at Bertram. I am excited to start my second year and am very ready to see our students and families back on campus. 
I graduated from Angelo State University in San Angelo, Texas with my Bachelor's and earned a Masters of Education Administration Degree from Texas Tech University. Guns up! Before serving as Assistant Principal, I was an Instructional Coach, Interventionist, and classroom teacher for 7 years. I began my career in Education in San Angelo, Texas where I taught for three years, then in Spring Branch ISD in Houston, lastly I spent the most recent six years in Pflugerville ISD as a teacher, interventionist, and an Instructional Coach before coming to Bertram last year.
I absolutely love the field of education and am dedicated to being a life long learner in this profession. The most rewarding aspects for me in education is the opportunity to build relationships with students, teachers, families, communities and getting to share and gain new knowledge with those on my campus. I am very passionate about building relationships and being a part of children's growth. I pride in being a part of every child's education and helping them grow personally, academically, socially and emotionally.  
My husband Austin Luedtke and myself, are both originally from Lampasas,Texas and have three children, Ardyn, Beckett and Barrett. Ardyn will be in 3rd grade this year, and Beckett will be in first grade. Our youngest Barrett, is 3 and half years old and full of personality! In my free time, I love to spend time with my family, hunt, be active and spend time outdoors.
 It's going to be a GREAT 2018-2019 school year!  It is an honor to be a member of the Burnet CISD team and a Bertram Bulldog!