Small School, BIG Benefits.

TJ's enrollment for the 2017-18 school year is 83 students in grades 7-12. Students collaborate across all subject areas and grade levels.

The average class size at TJ ranges from 8-15 students. This means participation is expected and class discussions are rich and varied.

TJ's student/teacher ratio is 7:1. TJ students feel known by their teachers.


Small School, BIG Results.

TJ students consistently score in the top 2% on their SATs ahead of their peers in boarding and day schools in Missouri and nation-wide.

100% of our graduates are accepted to four-year colleges.

Small school, BIG results. We give students the strongest possible academic background by steeping them in the liberal arts and all of the critical college-prep areas.


Small School, BIG Impact.

TJ's was founded in 1946 to serve as an academic outpost of excellence in the Midwest.

TJ has graduated over 700 alumni.


  Welcome from the Director of Admissions 2337372.jpg

  Thank you for your interest in Thomas Jefferson School (TJ)!  Our internationally          recognized boarding and day school is home to a wide array of students, faculty and      staff.  We like to think of ourselves as a small place that thinks big.  TJ students are    bright, capable, and enjoy learning. Intelligence is definitely a good thing here!  

  Extraordinary things happen in our campus community.  Our day and boarding students  find this the kind of place where anything is possible.  We do our best to help students learn about themselves just as much as they learn in the classroom.  Words you will hear around here quite a often are Challenge, Independence, and Community. These are all traits we want our students to learn and know.  View our Student Prospectus to learn more. 

Since 1946, TJ has delivered the best in a liberal-arts, college preparatory curriculum, and as such, our students consistently score in the top 2% of SAT scores nationwide. Our track record of excellence consistently sets us apart from peer day and boarding schools. Students and faculty interact in and out of the classroom and our small class sizes foster an environment where class room discussions are encouraged and expected.  Clubs, organizations, sports, and many other activities help our students become leaders.  Excellence is our motto, and our aspiration.

I value your interest in our school, and appreciate the time it takes to participate in our admissions process. I look forward to getting to know you, and invite you to submit an inquiry to ensure that you will receive our admissions event communications. See the school in action by liking us on Facebook at or on Instagram at 

Again, thank you for your interest in TJ! I cannot wait to get to know your family.


Erin Walsh, Director of Admissions and Communications


Statement of Non-Discrimination 

There shall be no discrimination by the School in the selection of its governing Board, in the employment of personnel, in the admission of students, or in the administration of the School’s programming because of race, color, religion, national origin, sex, age, sexual orientation, marital, veteran, or handicapped status in violation of existing state or federal law or regulations.

Visit Campus

Prospective students and their parents are encouraged to visit campus prior to submitting an application or scheduling the student shadow day or parent meeting. We feel that visiting TJ is a great way to get to know the school, and is essential to helping you determine if we may are the right school. To arrange a campus visit, please contact the admissions office at or (314) 843-4151.

Apply to TJ

TJ is accepting rolling applications for grades 7-12 the 2018-19 school year. Boarding applications strongly encouraged. 

Admissions Office
Thomas Jefferson School
4100 South Lindbergh Blvd.
St. Louis, MO 63127
314.843.4151 Phone
314.843.3527 Fax

Erin Walsh, M.A.
Director of Admissions and Communications
Ext. 2340