Phone: 281-327-3873


Degrees and Certifications:

Jennifer Petru, Principal

Hello, I am Jennifer Petru, and I have been dedicated to education and to Fort Bend ISD for 18 years in both middle and high school. My degrees are from Texas State (Eat Em’ up Cats!) and the University of Houston. I love spending time with my family and I have two amazing daughters.

I value the strong partnerships Thornton has with the community and parents to provide the best educational experience for the students. I am committed to the District's mission to inspire and equip students to pursue futures beyond what they can imagine. I believe in the importance of an engaging and supportive climate focused on student learning.  

Fort Bend ISD has the best and most diverse community in Texas! Thank you for allowing me the privilege of serving your families as the Principal of Thornton Middle School!

Thunder PRIDE never dies!

Phone: 281-327-3958


Degrees and Certifications:

Shannon Williams, Associate & 8th Grade Principal

Dr. Williams joins our staff with 23 years in education. A graduate of The University of Oklahoma in Mathematics Education, she earned her Masters in Educational Administration from the University of North Texas and Doctorate in Educational Leadership from Texas Southern University. Dr. Williams is a renaissance learner enjoying the opportunity to learn new topics of interest.    


Married to her college sweetheart Prosper Williams, Jr., they enjoy home projects, gardening and following the Prairie View ‘Marching Storm’ band program. Their sophomore son, Prosper Williams III, is a trombone player in the marching band, pep band and jazz band at Prairie View A&M.

Phone: 281-327-3908


Degrees and Certifications:

Mr. Patrick Watson, 7th Grade Principal

I am proud and grateful to be the Assistant Principal at Ronald Thornton Middle School. I am honored to embark upon my role and I look forward to assisting RTMS with all its great ideas and initiatives.


My role is to build relationships with all the Thundercat stakeholders and to help support our academic work. It is my philosophy that at the center of student achievement are the efforts of parents, teachers and students. My intention is to make sure that I can foster each of these as I support the mission of Fort Bend Independent School District. 


I have lived most of my life in Missouri City and have never wanted to leave this special area. My educational experiences have inspired me to be an educator. I graduated from Stephen F. Austin State University and accepted my first teaching position as a 6th grade teacher in Fort Bend. During my tenure I have served as a Physical Education, middle school science teacher, PALS and AVID teacher; Department Chair; and Master Science Teacher.  In 2018, I earned my master’s in educational administration from Texas Southern University. My decision to become an administrator came from a desire to make a positive impact on all students across the school.  


I’m eagerly anticipating working with the students, staff and parents and to take part in the phenomenal growth at Ronald Thornton Middle School. I look forward to getting this year off to a superb start!

Phone: 281-327-3875


Degrees and Certifications:

Elizabeth Guerra Canchola, 6th Grade Principal

I am a first generation high school and college graduate, something my family is extremely proud of. Born in Houston and raised in the Rio Grande Valley, gave me exposure to several cultural and societal differences. I began my teaching career with PSJA ISD. I have earned both my bachelor and master degrees from UTRGV and currently pursuing my Doctor in Educational Leadership.
I am married to Mark Canchola who is a Texas State Trooper. We have two children, Katherine and Benjamin, and six fur babies (too many, I know).  We enjoy traveling, going to the cinema, working out, and exploring the outdoors.  
I hope to inspire, guide, and motivate our students as they become successful middle schoolers!