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Very Good

#207 of 716 private schools in IL

Top 29% of private schools

St Mary School

Elementary School

536 E 3RD ST, Alton, IL 62002

Private

Enrollment

286

Student-Teacher

13.1:1

Score

7.0

Grades

Pre-K – 8th

Data vintage2021-22

How this school compares

Illinois private schools

#207 of 716

In Alton

#1 of 4

public schools

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St Mary School

7.0/10

Elementary School in Alton · grades Pre-K – 8th. Start here, then compare fit against nearby and district options.

Marquette Catholic High School

5.8/10

0.3 mi away. Use as a geographic alternative in the same move search.

Lovejoy Elem School

3.6/10

1.1 mi away. Use as a geographic alternative in the same move search.

About St Mary School

St Mary School is a private elementary school in Alton, IL. St Mary School serves approximately 286 students, and covers grades Pre-K-8th, and has a 13.1:1 student-teacher ratio. St Mary School has a current MySchoolScout rating of 7.0 out of 10 and ranks #207 of 716 private schools in IL.

How it compares0.8 pts above IL schools
  • This school 7.0 · Very Good
  • IL avg 6.2

What Parents Should Know

St Mary School is private, so it runs independently of the local district and sets its own curriculum. That freedom cuts both ways depending on what you want for your child. If you're considering it, start with the practical questions: tuition, financial aid, and how admissions work.

Compare to Public Schools

Beta

How St Mary School compares to 5 public schools serving similar grades in Alton, IL

Student-Teacher Ratio
13.1:1
This School
vs
13.2:1
Public Avg
Avg School Size
286
This School
vs
500
Public Avg
Avg School Scout Rating
7.0
This School
vs
4.6
Public Avg

Student Demographics

White 46.9% vs 0%
Hispanic 33.6% vs 0%
Black 13.3% vs 0%
St Mary School Alton Public Avg

Nearby Elementary Schools

School Rating
St Mary School (this school) 7.0
Lovejoy Elem School 3.6
West Elementary School 5.6
East Elementary School 5.2
Eunice Smith Elem School 4.0
Alton Middle School 4.6

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

Score Breakdown

Preliminary

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 IL.

Classroom Attention
? Student-teacher ratio calibrated against other private schools. Lower ratios mean more individual attention. (30% of overall score)
B- 4.9 / 10
View breakdown
Student-Teacher Ratio 13.1:1
Instructional Commitment
? Total annual instructional hours based on school day length and days per year. (15% of overall score)
B+ 7.1 / 10
View breakdown
School Day Length 7 hours
Annual Instructional Hours 1,232
Diversity & Inclusion
? Racial and ethnic diversity of the student body using Simpson's diversity index. (20% of overall score)
A 9.3 / 10
View breakdown
Diversity Index 65%
Community Context

Data Unavailable

School Profile
? Enrollment size and grade span breadth — indicators of program depth and peer community. (15% of overall score)
A- 8.0 / 10
View breakdown
Enrollment 286
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 IL

Test Scores

Test score data not yet available for this school.

Student Demographics NCES PSS (SY 2021-22)

White 46.9%
Hispanic 33.6%
Black 13.3%
Two or More 6.3%

Source: NCES Private School Survey (PSS)

Location

536 E 3RD ST, Alton, IL 62002

Nearby Alternatives

Families considering St Mary School may also want to explore other elementary schools in the area. ST AMBROSE CATHOLIC SCHOOL (rated 6.1/10, 2.6 miles away, in nearby Godfrey), with a comparable rating. Another option is MONTESSORI CHILDRENS HOUSE (rated 5.8/10, 4.4 miles away, in nearby Godfrey), a more accessible option. Additionally, West Elementary School (rated 5.6/10, 1.4 miles away), a more accessible option. For more schools in Alton, see our Alton schools guide .

Nearby Schools

20 within 4.5 mi
School Distance Rating
MARQUETTE CATHOLIC HIGH SCHOOL Alton 0.3 mi 5.8
Lovejoy Elem School Alton 1.1 mi 3.6
Eunice Smith Elem School Alton 1.5 mi 4.0
CENTER FOR CHILDREN TO HEAL AND ACHIEVE (CCHA) Alton 1.3 mi 6.5
West Elementary School Alton 1.4 mi 5.6
Alton Middle School Alton 1.5 mi 4.6
East Elementary School Alton 1.5 mi 5.2
MISSISSIPPI VALLEY CHRISTIAN SCHOOL Alton 2.2 mi 6.6
ST AMBROSE CATHOLIC SCHOOL Godfrey 2.6 mi 6.1
EVANGELICAL SCHOOL Godfrey 2.8 mi 4.6
Alton High School Alton 3.3 mi 7.1
Gilson Brown Elem School Godfrey 3.5 mi 3.4
North Elementary School Godfrey 4.0 mi 4.0
MONTESSORI CHILDRENS HOUSE Godfrey 4.4 mi 5.8
Washington Elem School East Alton 4.0 mi 4.9
BISSELL HALL St. Louis 4.9 mi 5.4
TWIN RIVERS St. Louis 4.9 mi
LEWIS AND CLARK HALL St. Louis 4.9 mi
Lewis & Clark Elem School Godfrey 5.3 mi 4.1
East Alton-Wood River High Sch Wood River 4.5 mi 6.4

Neighborhood Census ACS (2019-2023)

Census data for ZIP 62002 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$57,851

Median Home Value

$114,300

Median Rent

$941/mo

Population

30,036

College Educated

23.6%

Homeownership

63.4%

Avg Commute

23.8 min

Poverty Rate

20.7%

Median Age

41.5

Similar Schools

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

School Rating
Auburn Elem School Auburn, IL 7.0
Carlinville Intermediate School Carlinville, IL 7.0
Drummond Elem School Chicago, IL 7.0
Eagleview Elementary School Columbia, IL 7.0
Emmons Grade School Antioch, IL 7.0
Fieldcrest Elem School Oak Forest, IL 7.0

Frequently Asked Questions

Common questions about St Mary School

What grades does St Mary School serve?

St Mary School serves students in grades Pre-K through 8th.

How many students attend St Mary School?

St Mary School has an enrollment of approximately 286 students.

What is the student-teacher ratio at St Mary School?

The student-teacher ratio at St Mary School is 13.1:1. A lower ratio generally means more individual attention per student. The national average is approximately 11:1 for private schools.

How does St Mary School rank in IL?

St Mary School ranks #207 of 716 private schools in IL.

What is St Mary School's MySchoolScout rating?

St Mary School has a current MySchoolScout rating of 7.0 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.

Is St Mary School a private school?

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

Is St Mary School a religious school?

St Mary School has a Roman Catholic religious affiliation.

11 schools nearby View map →

Neighborhood Context

Walk Score
87 Very Walkable
Bike Score
47 Somewhat Bikeable

Powered by Walk Score

Quick Facts NCES PSS (SY 2021-22)

Grades
Pre-K – 8th
Enrollment
286
Gender Split
49% M / 51% F
Student-Teacher Ratio
13.1:1
Teachers (FTE)
22
Type
private
Coed Status
coed
Affiliation
Roman Catholic
School Day
7 hours
Days Per Year
176 days
Setting
Small Suburb
County
Madison County

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