Chaminade College Prep School Photo - 2015 Senior House Captains

Best Missouri All-Boys Private High Schools (2025)

For the 2025 school year, there are 14 all-boys private high schools serving 6,561 students in Missouri.
The top ranked all-boys private high schools in Missouri include St. Louis University High School, Christian Brothers College High School, and Chaminade College Prep School.
The average tuition cost is $18,672, which is higher than the Missouri private high school average tuition cost of $14,934.
93% of all-boys private high schools in Missouri are religiously affiliated (most commonly Catholic and Christian).

Top Ranked Missouri All-Boys Private High Schools (2025)

School
Location
Grades
Students
Chaminade College Prep School
Chaminade College Prep School Photo - 2015 Senior House Captains
All-boys (Catholic)
425 S. Lindbergh Blvd
Saint Louis, MO 63131
(314) 993-4400
Grades: 6-12
| 851 students
Chaminade College Preparatory School
All-boys (Catholic)
425 S Lindbergh Blvd
Saint Louis, MO 63131
(314) 993-4400
Grades: 6-12
| 832 students
Christian Brothers College High School
Christian Brothers College High School Photo
All-boys (Catholic)
1850 De La Salle Dr
Saint Louis, MO 63141
(314) 985-6095
Grades: 9-12
| 849 students
De Smet Jesuit High School
All-boys (Catholic)
(2)
233 N New Ballas Rd
Saint Louis, MO 63141
(314) 567-3500
Grades: 9-12
| 645 students
Missouri Military Academy
Missouri Military Academy Photo - Missouri Military Academy develops cadets who are of sound moral character, who have self-disciplined to strive for and achieve their goals and who are academically prepared to attend college.
All-boys
(1)
204 N Grand St
Mexico, MO 65265
(573) 581-1776
Grades: 7-12
| 193 students
Rockhurst High School
Rockhurst High School Photo
All-boys (Catholic)
9301 State Line Rd
Kansas City, MO 64114
(816) 363-2036
Grades: 9-12
| 938 students
St. John Vianney High School
All-boys (Catholic)
(2)
1311 S Kirkwood Rd
Saint Louis, MO 63122
(314) 965-4853
Grades: 9-12
| 526 students
St. Louis Priory School
All-boys (Catholic)
500 S Mason Rd
Saint Louis, MO 63141
(314) 434-3690
Grades: 7-12
| 331 students
St. Louis University High School
St. Louis University High School Photo - We challenge our students to think critically, lead courageously and transform the world as Men for Others.
All-boys (Catholic)
(1)
4970 Oakland Ave
Saint Louis, MO 63110
(314) 531-0330
Grades: 9-12
| 1,008 students
RR 3 Box 34725
Piedmont, MO 63957
(573) 223-2025
Grades: 5-12
| 15 students
Luc Boys School
All-boys | Alternative School (Christian)
(1)
296 Boys Ranch Rd
Lampe, MO 65681
(417) 779-5374
Grades: 4-12
| 20 students
Missouri Torah Institute
All-boys | Special Program Emphasis (Jewish)
1809 Clarkson Rd
Chesterfield, MO 63017
(636) 778-1896
Grades: 9-12
| 72 students
St. Mary's High School
St. Mary's High School Photo
All-boys (Catholic)
4701 S Grand Blvd
Saint Louis, MO 63111
(314) 481-8400
Grades: 9-12
| 271 students
Teen Harvest
Teen Harvest Photo - Boys and Staff
All-boys | Alternative School (Christian)
Co Rd 402
Ava, MO 65608
(417) 683-1080
Grades: 7-12
| 10 students

Frequently Asked Questions

What are the top ranked all-boys private high schools in Missouri?
The top ranked all-boys private high schools in Missouri include St. Louis University High School, Christian Brothers College High School, and Chaminade College Prep School.
How many all-boys private high schools are located in Missouri?
14 all-boys private high schools are located in Missouri.
How much do all-boys private high schools cost in Missouri?
The average tuition cost is $18,672, which is higher than the Missouri private school average tuition cost of $14,934.
How diverse are all-boys private high schools in Missouri?
Missouri all-boys private high schools are approximately 19% minority students, which is lower than the Missouri private school average of 23%.
What percentage of all-boys private high schools are religiously affiliated in Missouri?
93% of all-boys private high schools in Missouri are religiously affiliated (most commonly Catholic and Christian).

Recent Articles

The End of Teacher Tenure As We Know It?
The End of Teacher Tenure As We Know It?
Teacher tenure in our public schools is under attack. Will tenure as we know it survive? Some thoughts here.
Schools for Gifted Children
Schools for Gifted Children
Teaching gifted children requires deft handling. These children need intellectual and sensory stimulation. But they also need guidance and careful nurturing so that they grow up handling their special gifts and themselves appropriately.
The Private School Job Hunt: Insider Tips for Employed & Unemployed Educators
June 09, 2025
The Private School Job Hunt: Insider Tips for Employed & Unemployed Educators
Navigating the private school job market? Whether you're employed or unemployed, the right strategy can make all the difference. This article breaks down essential steps to keep your resume sharp, expand your network, and stay visible in the education community. Learn insider tips to position yourself for success in private schools.