Thomas Jefferson School (TJ) is a co-educational, non-sectarian, independent boarding and day school located in suburban St. Louis, Missouri. We educate a diverse and deliberately sized group of academically talented students spanning grades 7-12.
Latest News
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TJ Faculty Attends ISAC Conference in St. Louis
Read MoreThe TJ faculty attended the annual conference of The Independent Schools Association of the Central States (ISACS). Since this conference rotates among major cities in the Midwest, it was a particular gift that its St. Louis setting allowed our entire faculty to join 1,100 other independent-school educators from 140 schools in 13 states in thinking about the art and science of teaching.TJ faculty attended sessions on the neuroscience of learning, AI, strategies for building students' moral courage, and pedagogy across a variety of disciplines. We are grateful the TJ community recognizes that such learning opportunities only strengthen our ability to provide—as our mission states—"the strongest possible college-preparatory program." Such a program considers all aspects of our students' development into young adults with the skills, knowledge, courage, and open-mindedness it takes to "lift up the world with beauty and intellect." -
Congratulations to TJ's National Merit Semifinalists!
TJ is proud to recognize our TWO National Merit Scholarship Semifinalists: Ben Cashen '25 and Sebastian Stucke '25. Each year, over 1.5 million U.S. high school students enter the program by taking the PSAT/NMSQT. Of the top 50,000 students, 16,000 are chosen as Semifinalists and will move on to the Finalist round.Read More
Congratulations, Ben and Sebastian! -
The TJ Review 2024-25
It is time yet again to announce this year's plan for the TJ Review! The TJ Review is a book club of sorts open to the entire TJ community, past, present, and future.Read More -
Thomas Jefferson School Named #1 in 2025 Niche Best School Ratings
We are extremely proud to share our 2025 Niche Best Schools ratings for Thomas Jefferson School!Read More
#1 in Best College Prep Private High Schools in Missouri
#1 in Best Boarding High Schools in Missouri
#2 in Best High Schools for STEM in Missouri
#2 Most Diverse Private High School in Missouri
#3 Best Private High School in Missouri
2025 Thomas Jefferson School Rankings - Niche -
TJ Receives AP School Honor Roll Distinction
We’re so proud to announce that TJ has earned the AP School Honor Roll’s Platinum Distinction.Read More
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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.
