Average
#149 of 381 private schools in WA
Top 39% of private schools
St Monica School
Elementary School
4320 87TH AVE SE, Mercer Island, WA 98040
Estimated academic score. This school does not have standardized test data. Based on WA statewide data. Learn more
Enrollment
216
Student-Teacher
12.1:1
Score
6.7
Grades
Pre-K – 8th
Enrollment
216
Student-Teacher
12.1:1
Score
6.7
Grades
Pre-K – 8th
Updated
2021-22
Updated 2021-22
How this school compares
In Mercer Island
#4 of 4
public schools
Washington elementary schools
#82 of 231
About St Monica School
ST MONICA SCHOOL serves 216 students from pre-kindergarten through eighth grade in Mercer Island, Washington. This elementary school maintains a favorable 12.1:1 student-teacher ratio with 18 full-time equivalent teachers, creating an environment where students can receive more individualized attention. The school earns a 7.2 out of 10 rating from MySchoolScout and ranks #243 out of 381 elementary schools statewide, placing it in the 36th percentile among Washington schools.
While there's room for academic growth, the school's small class sizes provide a strong foundation for student development and personalized learning opportunities. ST MONICA SCHOOL is situated in one of Washington's most affluent communities, where the median household income reaches $190,985 and median home values are $1,683,600. The surrounding neighborhood reflects a highly educated population, with 78% of residents holding bachelor's degrees or higher, and maintains a low poverty rate of just 5.3%.
This educated, prosperous community of 25,464 residents creates a supportive environment for learning. The school operates within Mercer Island's large suburban setting, benefiting from the community's commitment to education while serving families in this well-established, academically-minded area.
What Parents Should Know
As a private school, St Monica 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
BetaHow St Monica School compares to 5 public schools serving similar grades in Mercer Island, WA
Student Demographics
Nearby Elementary Schools
| School | Rating |
|---|---|
| St Monica School (this school) | 6.7 |
| Northwood Elementary School | 9.1 |
| West Mercer Elementary | 8.8 |
| Island Park Elementary | 9.2 |
| Islander Middle School | 6.5 |
| Lakeridge Elementary School | 8.4 |
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 WA.
Data Unavailable
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 WA
Test Scores
Test score data not yet available for this school.
Student Demographics NCES PSS (SY 2021-22)
Source: NCES Private School Survey (PSS)
Location
4320 87TH AVE SE, Mercer Island, WA 98040
Nearby Alternatives
Families considering St Monica School may also want to explore other elementary schools in the area. Island Park Elementary (rated 9.2/10, 1.1 miles away), which scores notably higher. Another option is Hazelwood Elementary School (rated 9.2/10, 2.8 miles away, in nearby Newcastle), which scores notably higher. Additionally, Northwood Elementary School (rated 9.1/10, 0.3 miles away), which scores notably higher. For more schools in Mercer Island, see our Mercer Island schools guide .
Nearby Schools
20 within 2.4 mi| School | Distance | Rating |
|---|---|---|
| Mercer Island High School Mercer Island | 0.2 mi | 7.2 |
| Northwood Elementary School Mercer Island | 0.3 mi | 9.1 |
| West Mercer Elementary Mercer Island | 0.4 mi | 8.8 |
| NORTHWEST YESHIVA HIGH SCHOOL Mercer Island | 0.8 mi | 6.9 |
| PRIVETT ACADEMY Mercer Island | 0.8 mi | — |
| YELLOW WOOD ACADEMY Mercer Island | 0.8 mi | 8.2 |
| Island Park Elementary Mercer Island | 1.1 mi | 9.2 |
| FRENCH AMERICAN SCHOOL OF PUGET SOUND Mercer Island | 0.9 mi | 7.8 |
| EARLY WORLD MONTESSORI Mercer Island | 1.1 mi | — |
| CREATIVE LEARNING CENTER LLC Mercer Island | 1.5 mi | — |
| Enatai Elementary School Bellevue | 1.8 mi | 6.8 |
| Islander Middle School Mercer Island | 2.2 mi | 6.5 |
| Lakeridge Elementary School Mercer Island | 2.5 mi | 8.4 |
| Bellevue High School Bellevue | 2.7 mi | 7.5 |
| Newport Heights Elementary Bellevue | 2.2 mi | 8.5 |
| Vera Risdon Middle School Newcastle | 2.6 mi | 6.3 |
| TORAH ACADEMY OF THE PACIFIC NORTHWEST Seattle | 2.4 mi | — |
| Hazelwood Elementary School Newcastle | 2.8 mi | 9.2 |
| Medina Elementary School Medina | 3.3 mi | 8.3 |
| Newport Senior High School Bellevue | 2.4 mi | 8.0 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 98040 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$202,359
Median Home Value
$1,884,200
Median Rent
$2,464/mo
Population
25,282
College Educated
78.8%
Homeownership
66%
Avg Commute
24.9 min
Poverty Rate
4.6%
Median Age
45.8
Community Profile
The community surrounding St Monica School has a median household income of $202,359. It is a well-educated community where 79% of adults hold a bachelor's degree or higher. The median home value in the area is $1,884,200, with a median rent of $2,464/month. The local poverty rate of 4.6% is relatively low. The average commute for residents is 25 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Jefferson Elementary Port Angeles, WA | 6.7 |
| ST NICHOLAS CATHOLIC SCHOOL Gig Harbor, WA | 6.7 |
| George Elementary Quincy, WA | 6.8 |
| IMMACULATE CONCEPTION / OLPH Everett, WA | 6.8 |
| ST BENEDICT SCHOOL Seattle, WA | 6.8 |
| Lincoln Elementary School Olympia, WA | 6.6 |
Frequently Asked Questions
Common questions about St Monica School
What grades does St Monica School serve?
St Monica School serves students in grades Pre-K through 8th.
How many students attend St Monica School?
St Monica School has an enrollment of approximately 216 students.
What is the student-teacher ratio at St Monica School?
The student-teacher ratio at St Monica School is 12.1:1. A lower ratio generally means more individual attention per student. The national average is approximately 11:1 for private schools.
How does St Monica School rank in WA?
St Monica School is ranked #149 out of 381 private schools in WA.
What is St Monica School's MySchoolScout rating?
St Monica 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 St Monica School a private school?
Yes, St Monica 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 Monica School a religious school?
St Monica School has a Roman Catholic religious affiliation.
Explore More Schools
Neighborhood Context
- City Safety
- Elevated (1,278/100K)
FBI UCR 2024. City-level (Mercer Island). Data >1 year old.
Quick Facts NCES PSS (SY 2021-22)
- Grades
- Pre-K – 8th
- Enrollment
- 216
- Gender Split
- 50% M / 50% F
- Student-Teacher Ratio
- 12.1:1
- Teachers (FTE)
- 18
- Type
- private
- Coed Status
- coed
- Affiliation
- Roman Catholic
- School Day
- 6.8 hours
- Days Per Year
- 180 days
- Setting
- Large Suburb
- County
- KING
- Phone
- (206) 232-5432
- Data Year
- 2022–2023
Resources & Links
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 methodologyRelated reading
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