Principia School Photo

Best Missouri Private Elementary Schools Belonging to National Association of Independent Schools (NAIS) (2025-26)

For the 2025-26 school year, there are 35 private elementary schools belonging to National Association of Independent Schools (NAIS) serving 12,020 students in Missouri. You can also find more schools membership associations in Missouri.
The top ranked private elementary schools belonging to National Association of Independent Schools (NAIS) in Missouri include Chaminade College Prep School, John Burroughs School, and MICDS (Mary Institute and St. Louis Country Day School).
The average tuition cost is $25,356, which is higher than the Missouri private elementary school average tuition cost of $12,509.
40% of private elementary schools belonging to National Association of Independent Schools (NAIS) in Missouri are religiously affiliated (most commonly Catholic and Christian).

Top Ranked Private Elementary Schools Belonging to National Association of Independent Schools (NAIS) in Missouri (2025-26)

School
Location
Quick Facts
Forsyth School
Forsyth School Photo
(5)
6235 Wydown Boulevard
Saint Louis, MO 63105
(314) 726-4542
Gr: NS-6 | 385 students Avg. class size: 12 students Sports: 5 | Extracurrculars: 4 Tuition listed
St. Paul's Episcopal Day School
St. Paul's Episcopal Day School Photo - St. Paul's encourages social-emotional growth, character development, and leadership in all of our students as we provide one of the top academic educations in Kansas City.
(Episcopal)
(10)
4041 Main St
Kansas City, MO 64111
(816) 931-8614
Gr: PK-8 | 498 students Avg. class size: 40 students Sports: 3 | Extracurrculars: 7 Tuition & acceptance rate listed
The College School
The College School Photo
Alternative School
(9)
7825 Big Bend Blvd.
Saint Louis, MO 63119
(314) 962-9355
Gr: PK-8 Avg. class size: 20 students Sports: 4 | Extracurrculars: 15 Tuition listed
Academy Of The Sacred Heart
Academy Of The Sacred Heart Photo
(Catholic)
(9)
619 N 2nd St
Saint Charles, MO 63301
(636) 946-6127
Gr: K-8 | 195 students Avg. class size: 13 students Sports: 5 | Extracurrculars: 5 Tuition listed
The Barstow School
Special Program Emphasis (Catholic)
(1)
11511 State Line
Kansas City, MO 64114
(816) 277-0365
Gr: K-12 | 861 students Avg. class size: 10 students Sports: 11 Tuition & acceptance rate listed
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
Gr: 6-12 | 851 students Avg. class size: 17 students Sports: 19 | Extracurrculars: 29 Tuition & acceptance rate listed
Chesterfield Day School
Chesterfield Day School Photo - CDS students experience and solve real-world problems and then present their findings to authentic and meaningful audiences.
Montessori School
(6)
1100 White Road
Chesterfield, MO 63017
(314) 469-9622
Gr: K-5 | 62 students Avg. class size: 8 students Sports: 10 | Extracurrculars: 6 Tuition & acceptance rate listed
Chesterfield Montessori School
Chesterfield Montessori School Photo - Exterior
Montessori School
(7)
14000 Ladue Road
Chesterfield, MO 63017
(314) 469-7150
Gr: NS-8 Avg. class size: 24 students Extracurrculars: 11 Tuition & acceptance rate listed
Churchill Center & School
Churchill Center & School Photo - Churchill Center & School, a nationally-recognized independent school for dyslexia and other language-based learning disabilities, embodies their mission to give high potential children with learning disabilities the finest, individualized education and support they need to achieve success and return to a traditional classroom. Churchill provides research-based reading, writing and spelling instruction for students who are struggling with more traditional methods.
Special Education School
1021 Municipal Center Dr
Saint Louis, MO 63131
(314) 997-4343
Gr: 1-8 | 148 students Avg. class size: 9 students Tuition & acceptance rate listed
Columbia Independent School
Columbia Independent School Photo - Columbia Independent School is a JK-12th grade college preparatory school with enrollment of almost 400 students. We look forward to having your child become a CIS Lion!
(3)
1801 N Stadium Blvd
Columbia, MO 65202
(573) 777-9250
Gr: PK-12 | 400 students Avg. class size: 16 students Sports: 9 | Extracurrculars: 25 Tuition listed
Community School
Community School Photo
(6)
900 Lay Road
Saint Louis, MO 63124
(314) 991-0005
Gr: PK-6 | 350 students Avg. class size: 20 students Sports: 3 Tuition listed
500 DeBaliviere Avenue
Saint Louis, MO 63112
(314) 367-8085
Gr: 7-12 | 147 students Avg. class size: 9 students Sports: 7 | Extracurrculars: 5 Tuition listed
John Burroughs School
John Burroughs School Photo - In a rigorous curriculum, students learn creative problem solving, critical thinking, data-driven decision making and collaboration skills that will prepare them for active participation in a world with new challenges.
755 S Price Road
Saint Louis, MO 63124
(314) 993-4040
Gr: 7-12 | 660 students Avg. class size: 13 students Sports: 19 Tuition & acceptance rate listed
101 North Warson Road
Saint Louis, MO 63124
(314) 995-7367
Gr: PK-12 | 1,236 student Avg. class size: 16 students Sports: 20 | Extracurrculars: 3 Tuition & acceptance rate listed
Miriam School and Learning Center
Special Education School
1138 N. Warson Road
Saint Louis, MO 63132
(314) 962-6059
Gr: K-12 | 161 students Avg. class size: 8 students Sports: 1 | Extracurrculars: 7 Tuition listed
Notre Dame De Sion Grade School
Notre Dame De Sion Grade School Photo
(Catholic)
(2)
3823 Locust Street
Kansas City, MO 64109
(816) 683-7063
Gr: PK-8 | 310 students Avg. class size: 15 students Sports: 4 | Extracurrculars: 6 Tuition & acceptance rate listed
Oakhill Day School
Oakhill Day School Photo
7019 North Cherry Street
Kansas City, MO 64118
(816) 436-6228
Gr: PK-12 | 429 students Avg. class size: 13 students Sports: 4 | Extracurrculars: 9 Tuition & acceptance rate listed
Pembroke Hill School
Pembroke Hill School Photo
400 W 51st St
Kansas City, MO 64112
(816) 936-1200
Gr: NS-12 | 1,181 student Avg. class size: 16 students Sports: 17 | Extracurrculars: 60 Tuition & acceptance rate listed
Principia School
Principia School Photo
13201 Clayton Rd
Saint Louis, MO 63131
(314) 434-2100
Gr: PK-12 | 477 students Avg. class size: 14 students Sports: 14 | Extracurrculars: 13 Tuition listed
Rossman School
Rossman School Photo
(27)
12660 Conway Road
Saint Louis, MO 63141
(314) 434-5877
Gr: PK-6 | 239 students Avg. class size: 29 students Sports: 5 | Extracurrculars: 7 Tuition & acceptance rate listed
St. Joseph Christian School
St. Joseph Christian School Photo - Champion Academic Teams
(Christian)
5401 Gene Field Road
Saint Joseph, MO 64506
(816) 279-1555
Gr: PK-12 | 434 students Avg. class size: 21 students Sports: 8 | Extracurrculars: 10 Tuition & acceptance rate listed
St. Louis Priory School
All-boys (Catholic)
500 S Mason Rd
Saint Louis, MO 63141
(314) 434-3690
Gr: 7-12 | 331 students Avg. class size: 18 students Tuition listed
The Summit Preparatory School
The Summit Preparatory School Photo
Alternative School
(2)
202 E. Walnut Lawn St.
Springfield, MO 65807
(417) 869-8077
Gr: PK-12 | 171 students Avg. class size: 15 students Sports: 12 | Extracurrculars: 23 Tuition listed
Thomas Jefferson School
Thomas Jefferson School Photo
Special Program Emphasis
(1)
4100 S Lindbergh Boulevard
Saint Louis, MO 63127
(314) 843-4151
Gr: 7-12 | 75 students Avg. class size: 14 students Sports: 4 | Extracurrculars: 34 Tuition & acceptance rate listed
Villa Duchesne School
Villa Duchesne School Photo - Villa Duchesne Upper School (Girls, grades 7-12)
All-girls (Catholic)
10801 Conway Road
Saint Louis, MO 63131
(314) 432-2021
Gr: PK-12 | 584 students Avg. class size: 15 students Sports: 11 | Extracurrculars: 30 Tuition & acceptance rate listed
Visitation Academy Of St. Louis
Visitation Academy Of St. Louis Photo
All-girls (Catholic)
3020 North Ballas Road
Saint Louis, MO 63131
(314) 625-9100
Gr: PK-12 | 619 students Avg. class size: 14 students Sports: 12 | Extracurrculars: 32 Tuition listed
The Whitfield School
The Whitfield School Photo
175 S Mason Rd
Saint Louis, MO 63141
(314) 434-5141
Gr: 6-12 | 404 students Avg. class size: 14 students Sports: 17 | Extracurrculars: 30 Tuition listed
The Fulton School
The Fulton School Photo - Our Montessori classrooms give students a one-of-a-kind, hands-on experience.
Montessori School
(12)
1100 White Road
Chesterfield, MO 63017
(314) 469-6622
Gr: NS-12 | 127 students Avg. class size: 10 students Sports: 4 | Extracurrculars: 3 Tuition & acceptance rate listed
Logos School
Special Education School
9137 Old Bonhomme Rd
Saint Louis, MO 63132
(314) 997-7002
Gr: 6-12 | 113 students Tuition & acceptance rate listed
Rohan Woods School
Rohan Woods School Photo - Our Early Childhood class (Age 2) watches as Ms. Sullivan creates the colors in the book they are reading-- MOUSE PAINT. "It was magic, one little kiddo said as red and blue made purple!"
(8)
1515 Bennett Ave
Saint Louis, MO 63122
(314) 821-6270
Gr: NS-6 | 95 students Avg. class size: 9 students Sports: 5 | Extracurrculars: 8 Tuition & acceptance rate listed
St. Anns School
Montessori School (Catholic)
1156 Grand Ave
Carthage, MO 64836
(714) 358-2674
Gr: PK-6 | 71 students
St. Ignatius Loyola School
(Catholic)
(2)
19129 Mill Rd
Marthasville, MO 63357
(636) 932-4444
Gr: PK-8 | 52 students
Show-me Christian School
Alternative School (Christian)
24302 Mahin Road
La Monte, MO 65337
(660) 347-5982
Gr: 1-12 | 28 students Avg. class size: 23 students Sports: 3 | Extracurrculars: 1 Tuition listed
The St. Michael School Of Clayton
The St. Michael School Of Clayton Photo - The St. Michael School of Clayton supports each child in developing character,independence, strong academic skills and intellectual curiosity, which will result in a thinker who listens, an inquirer who negotiates, an inventor who collaborates, and an individual who believes in him or herself.
(Episcopal)
(2)
6345 Wydown Blvd
Saint Louis, MO 63105
(314) 721-4422
Gr: NS-8 | 156 students Avg. class size: 13 students Extracurrculars: 2 Tuition listed
The Wilson School
The Wilson School Photo - Since 1913, The Wilson School has excelled in reaching every student. Children thrive in deliberately small classes, with two full-time teachers in every grade. Wilson`s size, community, and innovation mean we can offer an excellent education, no matter the circumstances.
(5)
400 De Mun Ave
Saint Louis, MO 63105
(314) 725-4999
Gr: PK-6 | 170 students Avg. class size: 18 students Sports: 3 | Extracurrculars: 9 Tuition & acceptance rate listed

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