Thomas Jefferson School Photo #8

Thomas Jefferson School

Top 1% for STEM of all High Schools in the U.S.
Top 2% of all College Preparatory Private High Schools in the U.S.
Top 3% of all Private High Schools in the U.S.
#1 Boarding School in Missouri  Small by design: our campus of 80 boarding and day students is like a family. You are known. You are cared for.
Varsity academics: our classical, core, college prepatory curriculum was designed for an academically talented student.
360 degree college prep: students immerse themselves in the arts, athletics, friendships, and clubs.

Quick Stats (2025)

School Overview

Religious Affiliation
Grades Offered
Grades 7-12
ADD/ADHD Support
Yes
Year Founded
1946
School Calendar
First Day of School
Fri. Aug 15, 2025
Last Day of School
Mon. May 25, 2026
Campus Size
20

Student Body

Total Students
75 students
Student Body Type
Co-ed
% Students of Color
46%
State avg.: 20%
Students by Grade
Thomas Jefferson School Student By Grade

Academics and Faculty

Total Classroom Teachers
15 teachers
Student : Teacher Ratio
5:1
National avg.: 13:1
% Faculty w/Advanced Degree
93%
Average Class Size
14 students
Number of AP Courses
12 courses
List of Courses Offered
Advanced Courses
AP Biology, AP Calculus BC, AP Chemistry, AP Comparative Government & Politics, AP Computer Science A, AP Computer Science Principles, AP English Language and Composition, AP English Literature and Composition, AP Physics C, AP Statistics, AP U.S. Government & Politics, AP US History, AP World History: Modern
Average SAT score
1450
(Out of 1600)
Average ACT score
31
(Out of 36)
Average Percentile SSAT
98%
Matriculation DataMatric. Data
Classroom Dress Code
Casual
Business casual M-TH, Formal Fridays

Tuition and Acceptance Rate

Admission Deadline
Dec. 8 / rolling
Yearly Tuition Cost
Tuition Notes
Day students $37,950 5-day boarders $61,950 7-day domestic boarders $67,950 Int\'l boarders $69,950
% on Financial Aid
46%
Average Financial Aid Grant
$21,173
Acceptance Rate
90%
National avg.: 81%
Admissions Director
Heidi Pieroni
Admissions Associate
Myra Miller
Application URL
Endowment Size
$3 million

Sports

Total Sports Offered
4 sports

Extracurriculars

Total ExtracurricularsTotal Extra-curric.
34 extracurriculars
ExtracurricularsExtra-curric.
Club or Organization:
Admissions Ambassadors, Chess Club, Choir Club, Coding Club, Coffee Therapy, FIRST Robotics, Green Club, GSA, International Thespian Society, Mock Trial Team, Pandora, Prom Committee, Residential Life, Robotics Team, SAC, Service Learning Club, Spirit Club, Student Council, Tennis, The Declaration, Yearbook Staff

Arts and Music Programs:
Cabaret, Drama, Drawing, Fall Drama Production, Music Club, Music Lessons, Set Design, Spring Arts Showcase, Spring Drama Production, Theater, Winter Arts Showcase

Recreational Athletic Programs:
Fitness Club, Yoga

School Notes

  • School Mascot: Titans
  • The top-ranked Thomas Jefferson School (TJ) is internationally recognized as one of the bestboarding and day schools. TJ stands in the 30 U.S. boarding schools and as the #1 college-prep school in Missouri.Since 1946, TJ has instilled intellectual rigor and personal and socialresponsibility in its students as they prepare for college life. Visit our picturesque campus, and experience what makes TJ one of the top schools inthe country! Learn more atwww.tjs.org.
  • Application deadline: still accepting applications for rolling admissions
  • 1450/31 is the average SAT/ACT score
  • Sample of notable school alumni/alumnae:
    • Hon. Thomas P. Griesa, '48 - Frmr US District Judge
    • Mr. Bernat Rosner, '50 - Frmr General Counsel of Safeway; Author
    • Mr. John H. Biggs, '54 - Director of Boeing Co.; Frmr CEO of TIAA-Cref
    • Mr. Irv Williamson, 61 - US International Trade Commissioner
    • Dr. Richard Levy, '63 - Pediatric Endocrinologist
    • Mr. Keith Williamson, '70 - Senior VP and General Counsel for Centene Corporation
    • Ms. Aimee Dowl, '92 - US Department of State; Author
    • Dr. Dave Messina, '92 - COO at Cofactor Genomics
    • Ms. Alisa Tang, '92 - Editor, Washington Post
Source: Verified school update

Frequently Asked Questions

How much does Thomas Jefferson School cost?
Thomas Jefferson School's tuition is approximately $37,950 for private students and $375 for summer students.
What is the acceptance rate of Thomas Jefferson School?
The acceptance rate of Thomas Jefferson School is 90%, which is higher than the national average of 85%.
Who are famous alumni from Thomas Jefferson School?
Thomas Jefferson School famous alumni include: Hon. Thomas P. Griesa, '48, Mr. Bernat Rosner, '50, Mr. John H. Biggs, '54, Mr. Irv Williamson, 61, Dr. Richard Levy, '63, Mr. Keith Williamson, '70, Ms. Aimee Dowl, '92, Dr. Dave Messina, '92 and Ms. Alisa Tang, '92.
What sports does Thomas Jefferson School offer?
Thomas Jefferson School offers 4 interscholastic sports: Basketball, Soccer, Tennis and Volleyball.
What is Thomas Jefferson School's ranking?
When is the application deadline for Thomas Jefferson School?
The application deadline for Thomas Jefferson School is Dec. 8 / rolling (applications are due on Dec. 8 but additional applications are reviewed year-round as space permits ).

School Reviews

5  
There are the typical larger boarding schools (of which there are many), and then there is TJ. It is excellent is so many ways. The rigorous, traditionally classical curriculum provides a timeless education without scattershot electives which lack an incorporation into the core. There`s no underwater basket weaving class at TJ. The faculty carry advanced degrees from leading universities, and an amazing commitment to developing the critical thinking skills of their students. No single moral or political philosophy is considered "correct" at TJ; intelligent and respectful debate is encouraged. And the school doesn`t slam the kids by booking every minute of their day with too heavy an emphasis on sports, clubs, and extra-curriculars. The students at TJ can do those things, but they are also given adequate open time to process what they read and really learn. This is so often lacking in other top-tier schools. The results speak for themselves: leading test scores, impressive college placements, and - most importantly - articulate, literate, ambitious, deeply thoughtful, rational, and competent graduates. A++
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Quick Stats (2025)

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Did You Know?

The average private school tuition in Saint Louis, MO is $16,705 for elementary schools and $21,235 for high schools (read more about average private school tuition across the country).
The average acceptance rate in Saint Louis, MO is 82% (read more about average acceptance rates across the country).

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