Skip to main content

Very Good

#100 of 378 private schools in MD

Top 26% of private schools

St Mary of the Assumption School

Elementary School

4610 LARGO RD, Upper Marlboro, MD 20772

Private

Enrollment

211

Student-Teacher

10:1

Score

7.1

Grades

Pre-K – 8th

Data vintage2021-22

How this school compares

Maryland private schools

#100 of 378

In Upper Marlboro

#1 of 5

public schools

School shortlistprofile + nearby

Shortlisting around St Mary of the Assumption School?

Use this profile as one decision point, then compare nearby options, source confidence, and commute fit before picking a neighborhood around it.

Shortlist starter

Start with these real page-level signals, then use the full table and map below.

St Mary of the Assumption School

7.1/10

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

Barack Obama Elementary

4.9/10

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

Dr. Henry A. Wise Jr. High

4.7/10

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

About St Mary of the Assumption School

St Mary of the Assumption School is a private elementary school in Upper Marlboro, MD. St Mary of the Assumption School serves approximately 211 students, and covers grades Pre-K-8th, and has a 10:1 student-teacher ratio. St Mary of the Assumption School has a current MySchoolScout rating of 7.1 out of 10 and ranks #100 of 378 private schools in MD.

How it compares0.8 pts above MD schools
  • This school 7.1 · Very Good
  • MD avg 6.3

What Parents Should Know

St Mary of the Assumption 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 of the Assumption School compares to 12 public schools serving similar grades in Upper Marlboro, MD

Student-Teacher Ratio
10:1
This School
vs
15.6:1
Public Avg
Avg School Size
211
This School
vs
571
Public Avg
Avg School Scout Rating
7.1
This School
vs
5.5
Public Avg

Student Demographics

Black 64.9% vs 0%
White 8.5% vs 0%
Hispanic 3.8% vs 0%
Asian 0.5% vs 0%
St Mary of the Assumption School Upper Marlboro Public Avg

Nearby Elementary Schools

School Rating
St Mary of the Assumption School (this school) 7.1
Barack Obama Elementary 4.9
Patuxent Elementary 4.8
Imagine Foundations at Leeland PCS 5.3
Marlton Elementary 4.4
Perrywood Elementary 5.3
Chesapeake Math and IT South Public Charter 7.7
Melwood Elementary 4.8
Arrowhead Elementary 6.4
Kettering Elementary 3.6
Kettering Middle 7.3
Rosaryville Elementary 4.0
Mattaponi Elementary 7.1

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 MD.

Classroom Attention
? Student-teacher ratio calibrated against other private schools. Lower ratios mean more individual attention. (30% of overall score)
B 6.0 / 10
View breakdown
Student-Teacher Ratio 10:1
Instructional Commitment
? Total annual instructional hours based on school day length and days per year. (15% of overall score)
A- 7.6 / 10
View breakdown
School Day Length 7 hours
Annual Instructional Hours 1,260
Diversity & Inclusion
? Racial and ethnic diversity of the student body using Simpson's diversity index. (20% of overall score)
B+ 7.4 / 10
View breakdown
Diversity Index 52%
Community Context

Data Unavailable

School Profile
? Enrollment size and grade span breadth — indicators of program depth and peer community. (15% of overall score)
A- 8.2 / 10
View breakdown
Enrollment 211
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 MD

Test Scores

Test score data not yet available for this school.

Student Demographics NCES PSS (SY 2021-22)

Black 64.9%
Two or More 22.3%
White 8.5%
Hispanic 3.8%
Asian 0.5%

Source: NCES Private School Survey (PSS)

Location

4610 LARGO RD, Upper Marlboro, MD 20772

Nearby Alternatives

Families considering St Mary of the Assumption School may also want to explore other elementary schools in the area. EDIFIED CHRISTIAN PREPARATORY ACADEMY (rated 6.5/10, 5.1 miles away), with a comparable rating. Another option is Pointer Ridge Elementary (rated 6.1/10, 5.6 miles away, in nearby Bowie), with a comparable rating. Additionally, Imagine Foundations at Leeland PCS (rated 5.3/10, 3.4 miles away), a more accessible option. For more schools in Upper Marlboro, see our Upper Marlboro schools guide .

Nearby Schools

20 within 6.6 mi
School Distance Rating
Barack Obama Elementary Upper Marlboro 2.1 mi 4.9
Dr. Henry A. Wise Jr. High Upper Marlboro 2.1 mi 4.7
Patuxent Elementary Upper Marlboro 2.1 mi 4.8
Imagine Foundations at Leeland PCS Upper Marlboro 3.4 mi 5.3
Frederick Douglass High Upper Marlboro 3.5 mi 6.5
RIVERDALE BAPTIST SCHOOL Upper Marlboro 3.9 mi 6.3
Marlton Elementary Upper Marlboro 4.3 mi 4.4
Perrywood Elementary Upper Marlboro 4.4 mi 5.3
DIVINE PEACE ELEMENTARY SCHOOL Largo 4.4 mi 4.4
Pointer Ridge Elementary Bowie 5.6 mi 6.1
EDIFIED CHRISTIAN PREPARATORY ACADEMY Upper Marlboro 5.1 mi 6.5
FAIRHAVEN SCHOOL Upper Marlboro 5.5 mi 5.9
Kettering Elementary Upper Marlboro 5.7 mi 3.6
Kettering Middle Upper Marlboro 5.8 mi 7.3
Chesapeake Math and IT South Public Charter Upper Marlboro 5.0 mi 7.7
Largo High Upper Marlboro 5.7 mi 5.3
International High school @ Largo Upper Marlboro 5.7 mi 6.5
Kingsford Elementary Mitchellville 6.2 mi 4.7
Melwood Elementary Upper Marlboro 5.4 mi 4.8
C. Elizabeth Rieg Mitchellville 6.6 mi 3.3

Neighborhood Census ACS (2019-2023)

Census data for ZIP 20772 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$135,576

Median Home Value

$443,500

Median Rent

$2,045/mo

Population

52,768

College Educated

45.6%

Homeownership

89.6%

Avg Commute

39.1 min

Poverty Rate

3.9%

Median Age

42

Similar Schools

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

School Rating
ARCHBISHOP BORDERS SCHOOL Baltimore, MD 7.1
Bel Air Elementary Cumberland, MD 7.1
Creative City Public Charter School Baltimore, MD 7.1
Deale Elementary Deale, MD 7.1
HARFORD DAY SCHOOL Bel Air, MD 7.1
ST CASIMIR CATHOLIC SCHOOL Baltimore, MD 7.1

Frequently Asked Questions

Common questions about St Mary of the Assumption School

What grades does St Mary of the Assumption School serve?

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

How many students attend St Mary of the Assumption School?

St Mary of the Assumption School has an enrollment of approximately 211 students.

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

The student-teacher ratio at St Mary of the Assumption School is 10:1. A lower ratio generally means more individual attention per student. The national average is approximately 11:1 for private schools.

How does St Mary of the Assumption School rank in MD?

St Mary of the Assumption School ranks #100 of 378 private schools in MD.

What is St Mary of the Assumption School's MySchoolScout rating?

St Mary of the Assumption School has a current MySchoolScout rating of 7.1 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 of the Assumption School a private school?

Yes, St Mary of the Assumption 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 of the Assumption School a religious school?

St Mary of the Assumption School has a Roman Catholic religious affiliation.

11 schools nearby View map →

Neighborhood Context

Walk Score
21 Car-Dependent
Bike Score
8 Somewhat Bikeable

Powered by Walk Score

Quick Facts NCES PSS (SY 2021-22)

Grades
Pre-K – 8th
Enrollment
211
Gender Split
43% M / 57% F
Student-Teacher Ratio
10:1
Teachers (FTE)
21
Type
private
Coed Status
coed
Affiliation
Roman Catholic
School Day
7 hours
Days Per Year
180 days
Setting
Large Suburb
County
Prince George's County

How we rate schools

A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.

See how we rate

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.