About Thomas Jefferson School

Welcome to Thomas Jefferson School (TJ), an international coed boarding and day school community for grades 7 to 12 located in suburban St. Louis, Missouri. Our core classical liberal arts curriculum appeals to students from St. Louis to Shanghai, Little Rock to Nowy Sacz. We are a community of diverse minds aspiring to the highest standards of scholarship.  You can learn more about TJ by reading our Student Prospectus. 

What our students have to say


"One of my biggest dreams has always been to study in a top, diverse school, where I knew my voice would be heard. Fortunately for me, this dream came true one year ago when I was accepted at Thomas Jefferson School. I found myself in a pleasant studying environment, surrounded by fully dedicated teachers and super friendly, curious students. Immediately after joining the wonderful TJ community, I felt part of a huge family where I was respected for who I was and treated like a worthwhile person. Studying at TJ is not only preparing me to excel in college, it is also helping me mature socially and become a more responsible person. The best part of being a TJ student is having the opportunity to live and study with students from all over the world; students with whom you can exchange cultural experiences at any time. There isn’t any place like the TJ community in the whole world. I wish I could always be a TJ student."

Sara H. ‘18, Albania


Our Mission

Thomas Jefferson School gives its students the strongest possible academic background through a classical education. Within a nurturing community, students develop a responsibility for their own learning and a desire to lift up the world with beauty and intellect.

The Best Choice for College Preparation 

Since 1946, Thomas Jefferson School (TJ) has provided students the best environment in which to develop true intellectual depth. We provide an unparalleled program that emphasizes community and responsibility and holds students to high expectations in every area of school life.

TJ students are truly diverse and can’t be categorized as any particular type. They share energy, independence, a passion for learning, and a commitment to preparing for college. TJ students connect with others who have the same desire to learn. TJ is truly a second home.

The formative teenage years are a critical time for developing cultural awareness and analytical thinking. The liberal arts, ideally suited for this time in life, give young people an education that is never out of date.

TJ students are remarkable. We consider it a privilege to work with them. Their impressive college-placement record is a result of their natural ability and their learning experience at TJ. 




NAEA Badge.jpg

Screen Shot 2017-11-07 at 11.39.38 AM.png