Why TJ

Are you insatiably curious? A voracious reader? Do you enjoy problem solving and engaging in the real-world application of what you've learned? Do you aspire the make the world a better place in ways big and small?

Small School. Big Impact.

Thomas Jefferson School (TJ) is internationally recognized as one of the best coed boarding and day schools in the United States for grades 7–12; in fact, places us among the top 30 boarding schools in the nation and the top 2% for STEM. 

We know that high-ability students thrive when they are surrounded by others who are equally enthusiastic about learning. TJ’s dynamic curriculum is designed to meet the needs of our small classes of motivated students (6:1 student teacher ratio). We offer the kind of depth, abstraction, and complexity that allow higher-level thinking and the development of critical-thinking skills. In class discussion, on the basketball court, in a newspaper staff meeting, or on the stage, TJ students apply their learning in and out of the classroom.

Through our 360-degree college-preparatory program, our students learn to live and work alongside others from all over the world, to develop essential communication and leadership skills, and to move through the world with a sense of personal responsibility. 

When the time comes for college, families want to know their child has been properly prepared for the challenges of a university education, in and out of the classroom. At TJ, we understand success is not accidental. We realize it requires both academic and character development.  

Choosing an independent school is a very important decision. We urge you to visit our picturesque campus and speak with our students and faculty. We look forward to sharing our remarkable community with you!

TJ Admissions Team

List of 1 members.

  • Photo of Heidi Pieroni

    Mrs. Heidi Pieroni 

    Director of Admissions and Summer Programs
    John Burroughs School
    Saint Louis University - B.A.
    University of Pennsylvania - M.S.
    Saint Louis University - M.A.

TJ Facts at a Glance

Start Your TJ Journey

The best way to get to know TJ is by spending time on campus, meeting our students and experiencing our classes. See our community for yourself at one of our open houses, shadow days, or let us create the perfect visit just for you.

Thomas Jefferson School

4100 S. Lindbergh Boulevard
Saint Louis, MO 63127
P. (314) 843-4151
F. (314) 843-3527