Skip to main content

Average

#163 of 399 private schools in MO

Top 41% of private schools

Mary Institute & St Louis Country Day School

School

101 N WARSON RD, St. Louis, MO 63124

Private Estimated Score

Estimated academic score. This school does not have standardized test data. Based on MO statewide data. Learn more

Enrollment

1,225

Student-Teacher

9.8:1

Score

6.7

Grades

Pre-K – 12th

Updated 2021-22

How this school compares

In St. Louis

#42 of 74

public schools

Missouri schools

#53 of 90

About Mary Institute & St Louis Country Day School

Mary Institute & St Louis Country Day School serves 1,225 students from prekindergarten through 12th grade in Saint Louis, Missouri. With 125 full-time equivalent teachers, the school maintains an excellent student-teacher ratio of 9.8:1, allowing for more personalized attention and smaller class sizes. The school holds a MySchoolScout rating of 7.3 out of 10 and ranks #244 out of 399 schools statewide, placing it in the 39th percentile among Missouri schools.

This indicates solid performance with opportunities for continued academic growth and development. Mary Institute & St Louis Country Day School is situated in an affluent and highly educated community where 81% of residents hold bachelor's degrees or higher. The surrounding neighborhood in ZIP code 63124 has a median household income of $177,326 and a median home value of $862,400, with only 2.3% of families living below the poverty line.

This demographic profile reflects a community that highly values education and provides strong support for academic achievement. The school's comprehensive PK-12 structure allows students to develop within a consistent educational environment throughout their formative years. Mary Institute & St Louis Country Day School operates in Saint Louis's large suburban setting, offering families access to both quality education and the cultural and recreational opportunities of a major metropolitan area.

What Parents Should Know

With a student-teacher ratio of 9.8:1, Mary Institute & St Louis Country Day School offers a notably low ratio compared to the national average. This typically means smaller class sizes and more opportunities for one-on-one interaction between students and teachers.

As a private school, Mary Institute & St Louis Country Day School operates independently from the local public school district. Families considering this school should inquire about tuition costs, financial aid availability, and the admissions process. Private schools are not required to follow the same curriculum standards as public schools, which can be either an advantage or a consideration depending on your priorities.

Compare to Public Schools

Beta

How Mary Institute & St Louis Country Day School compares to 203 public schools serving similar grades in St. Louis, MO

Student-Teacher Ratio
9.8:1
This School
vs
14.3:1
Public Avg
Avg School Size
1,225
This School
vs
394
Public Avg
Avg School Scout Rating
6.7
This School
vs
6.0
Public Avg

Student Demographics

White 59.5% vs 0%
Asian 22.1% vs 0%
Black 7.6% vs 0%
Hispanic 1.1% vs 0%
Mary Institute & St Louis Country Day School St. Louis Public Avg

Nearby Other Schools

School Rating
Mary Institute & St Louis Country Day School (this school) 6.7
OLD BONHOMME ELEMENTARY 7.2
SPOEDE ELEMENTARY 8.8
LADUE HORTON WATKINS HIGH 8.9
CONWAY ELEMENTARY 9.5
LADUE EARLY CHILDHOOD CENTER 5.0
LADUE FIFTH GRADE CENTER 8.5
LADUE MIDDLE 7.9
REED ELEMENTARY 8.8
IVELAND ELEM. 6.2
CRAIG ELEM. 7.9
WYLAND ELEM. 4.8
MARION ELEM. 3.5
HUDSON ELEM. 8.6
ROSS ELEM. 4.3
DR. HENRY GIVENS JR. ELEM. 7.8
RITENOUR MIDDLE 5.5
WASHINGTON ELEM. 5.7
RITENOUR SR. HIGH 5.2
MCKELVEY PRIMARY 7.6
NORTH HIGH 6.8

Showing 20 of 203 schools. View all schools in St. Louis

Demographics sourced from NCES Private School Survey (PSS) and Common Core of Data (CCD). Comparisons are based on enrollment-weighted averages.

Score Breakdown

What This Rating Measures

This rating reflects classroom size, instructional time, student diversity, community resources, and school characteristics. Private schools are ranked against other private schools in MO.

Classroom Attention
? Student-teacher ratio calibrated against other private schools. Lower ratios mean more individual attention. (30% of overall score)
B+ 7.0 / 10
View breakdown
Student-Teacher Ratio 9.8:1
Instructional Commitment
? Total annual instructional hours based on school day length and days per year. (15% of overall score)
B 6.1 / 10
View breakdown
School Day Length 7.2 hours
Annual Instructional Hours 1,224
Diversity & Inclusion
? Racial and ethnic diversity of the student body using Simpson's diversity index. (20% of overall score)
A+ 9.6 / 10
View breakdown
Diversity Index 58%
Community Context

Data Unavailable

School Profile
? Enrollment size and grade span breadth — indicators of program depth and peer community. (15% of overall score)
C 2.6 / 10
View breakdown
Enrollment 1,225
View data sources

Score basis: Private school model

Data coverage: 80% of scoring components had data

Components scored: 4 of 5

Ranking pool: Private schools in MO

Test Scores

Test score data not yet available for this school.

Student Demographics NCES PSS (SY 2021-22)

White 59.5%
Asian 22.1%
Two or More 9.6%
Black 7.6%
Hispanic 1.1%
Native American 0.1%

Source: NCES Private School Survey (PSS)

Location

101 N WARSON RD, St. Louis, MO 63124

Nearby Alternatives

Families considering Mary Institute & St Louis Country Day School may also want to explore other schools in the area. VILLA DUCHESNE & OAK HILL SCHOOL (rated 8.5/10, 1.5 miles away), which scores notably higher. Additionally, HILLCREST SDA SCHOOL (rated 5.2/10, 1.4 miles away, in nearby Olivette), a more accessible option. For more schools in St. Louis, see our St. Louis schools guide .

Nearby Schools

20 within 2.0 mi
School Distance Rating
OLD BONHOMME ELEMENTARY St. Louis 0.9 mi 7.2
CHAMINADE COLLEGE PREP SCHOOL St. Louis 0.8 mi 7.0
IMMANUEL LUTHERAN SCHOOL Olivette 1.1 mi 6.5
LADUE HORTON WATKINS HIGH St. Louis 1.3 mi 8.9
CONWAY ELEMENTARY St. Louis 1.3 mi 9.5
HILLCREST SDA SCHOOL Olivette 1.4 mi 5.2
LADUE MIDDLE St. Louis 1.3 mi 7.9
SPOEDE ELEMENTARY St. Louis 1.1 mi 8.8
MIRIAM ACADEMY St. Louis 1.5 mi 7.2
LADUE EARLY CHILDHOOD CENTER St. Louis 1.3 mi 5.0
LADUE FIFTH GRADE CENTER St. Louis 1.3 mi 8.5
VILLA DUCHESNE & OAK HILL SCHOOL St. Louis 1.5 mi 8.5
ANNUNZIATA SCHOOL St. Louis 1.6 mi
WILLOW BROOK ELEM. Creve Coeur 1.9 mi 5.0
LOGOS SCHOOL Olivette 1.8 mi 9.0
REED ELEMENTARY St. Louis 1.8 mi 8.8
LITZSINGER Ladue 2.4 mi 6.5
HARPER SCHOOL, LLC Frontenac 2.2 mi
ST JOSEPH'S ACADEMY St. Louis 2.4 mi 6.4
COMMUNITY SCHOOL St. Louis 2.0 mi 8.1

Neighborhood Census ACS (2019-2023)

Census data for ZIP 63124 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$188,750

Median Home Value

$967,300

Median Rent

$1,812/mo

Population

11,009

College Educated

85%

Homeownership

74.8%

Poverty Rate

2.3%

Median Age

47.6

Community Profile

The community surrounding Mary Institute & St Louis Country Day School has a median household income of $188,750. It is a well-educated community where 85% of adults hold a bachelor's degree or higher. The median home value in the area is $967,300, with a median rent of $1,812/month. The local poverty rate of 2.3% is relatively low. Source: U.S. Census ACS 2022 5-Year Estimates.

Similar Schools

Schools in the same state with comparable level, size, and ratings

School Rating
THE BARSTOW SCHOOL Kansas City, MO 6.9
THE PEMBROKE HILL SCHOOL - WORNALL CAMPUS Kansas City, MO 7.0
MOCAP Attendance Center Springfield, MO

Frequently Asked Questions

Common questions about Mary Institute & St Louis Country Day School

What grades does Mary Institute & St Louis Country Day School serve?

Mary Institute & St Louis Country Day School serves students in grades Pre-K through 12th.

How many students attend Mary Institute & St Louis Country Day School?

Mary Institute & St Louis Country Day School has an enrollment of approximately 1,225 students.

What is the student-teacher ratio at Mary Institute & St Louis Country Day School?

The student-teacher ratio at Mary Institute & St Louis Country Day School is 9.8:1. A lower ratio generally means more individual attention per student. The national average is approximately 11:1 for private schools.

How does Mary Institute & St Louis Country Day School rank in MO?

Mary Institute & St Louis Country Day School is ranked #163 out of 399 private schools in MO.

What is Mary Institute & St Louis Country Day School's MySchoolScout rating?

Mary Institute & St Louis Country Day School has a composite rating of 6.7 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.

Is Mary Institute & St Louis Country Day School a private school?

Yes, Mary Institute & St Louis Country Day School is a private coeducational school with a Nonsectarian affiliation. Private schools are not required to participate in state standardized testing, so academic performance data may be limited compared to public schools.

Is Mary Institute & St Louis Country Day School a religious school?

No, Mary Institute & St Louis Country Day School is a nonsectarian (non-religious) private school.

11 schools nearby View map →

Neighborhood Context

Walk Score
6 Car-Dependent
Bike Score
22 Somewhat Bikeable
City Safety
High (7,108/100K)

Powered by Walk Score

FBI UCR 2024. City-level (St. Louis). Data >1 year old.

Quick Facts NCES PSS (SY 2021-22)

Grades
Pre-K – 12th
Enrollment
1,225
Gender Split
52% M / 48% F
Student-Teacher Ratio
9.8:1
Teachers (FTE)
125
Type
private
Coed Status
coed
Affiliation
Nonsectarian
School Day
7.2 hours
Days Per Year
170 days
Setting
Large Suburb
County
ST. LOUIS
Data Year
2022–2023

How We Rate Schools

Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.

Read our full methodology

Related reading

Get school insights in your inbox

New rankings, best-schools lists, and parent guides — delivered free. No spam, unsubscribe anytime.

We respect your privacy. Unsubscribe at any time.