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#183 of 381 private schools in WA

Top 48% of private schools

St Philomena School

Elementary School · Des Moines, WA

A private elementary school in Des Moines, WA serving grades Pre-K – 8th.

Private

1815 S 220TH ST, Des Moines, WA 98198

  • 16.4:1 student-teacher ratio

Academics

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 WA.

Classroom Attention
?Student-teacher ratio calibrated against other private schools. Lower ratios mean more individual attention. (30% of overall score)
C2.7 / 10
View breakdown
Student-Teacher Ratio16.4:1
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 Length6.8 hours
Annual Instructional Hours1,224
Diversity & Inclusion
?Racial and ethnic diversity of the student body using Simpson's diversity index. (20% of overall score)
A+9.8 / 10
View breakdown
Diversity Index76%
Community Context

Data not available

School Profile
?Enrollment size and grade span breadth — indicators of program depth and peer community. (15% of overall score)
A-8.3 / 10
View breakdown
Enrollment256
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

Most recent published year. School vs. WA average.

Test score data not yet available for this school.

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

The neighborhood

Where St Philomena School sits, and what the surrounding area looks like.

Nearby same-level schools are colored by their score. Pins are locations, not attendance boundaries. Open the Seattle map →

Getting around & local context

  • Walk 37Car-Dependent
  • Bike 37Somewhat Bikeable
  • City Safety: High3,161/100K

Powered byWalk Score

FBI Uniform Crime Reporting · 2024 · city context (Des Moines), not school-level safety or attendance eligibility. Source details

Source period: 2024. Freshness not available.

Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)

Median income

$83,938

Median home value

$527,100

Median rent

$1,770/mo

College educated

31.5%

Homeownership

54.3%

Poverty rate

11.5%

ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 98198; this is area context, not an attendance boundary.

Programs & students

Student demographicsNCES Private School Universe Survey (PSS) (SY 2021–22)

White32.0%
Black28.9%
Asian15.6%
Hispanic12.1%
Two or More11.3%

Source: NCES Private School Universe Survey (PSS)

Compare nearby

Nearby same-level schools

4 from a 5-mile search

SchoolScoreGradesDistanceEnrollmentCompare
Midway ElementaryEnrollment path unverified3.8PK–50.5 mi564Compare →
Des Moines ElementaryEnrollment path unverified5.3PK–51.1 mi507Compare →
River Ridge ElementaryEnrollment path unverified5.3PK–51.1 mi660Compare →
Madrona ElementaryEnrollment path unverified3.9PK–51.4 mi333Compare →

Distance is proximity only; it is not attendance eligibility.

Enrollment path unverified: Potential public school; its attendance or application path has not been classified.

St Philomena School is listed in Des Moines, WA; verify the current enrollment path directly.

About St Philomena School

St Philomena School is a private elementary school in Des Moines, WA, serving approximately 256 students in grades Pre-K-8th with a 16.4:1 student-teacher ratio. It holds a MySchoolScout rating of 6.4 out of 10 and ranks #183 of 381 private schools in WA.

Frequently asked questions

Common questions about St Philomena School

What grades does St Philomena School serve?

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

How many students attend St Philomena School?

St Philomena School has an enrollment of approximately 256 students.

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

The student-teacher ratio at St Philomena School is 16.4:1. A lower ratio generally means more individual attention per student. The national average is approximately 11:1 for private schools.

How does St Philomena School rank in WA?

St Philomena School ranks #183 of 381 private schools in WA.

What is St Philomena School's MySchoolScout rating?

St Philomena School has a current MySchoolScout rating of 6.4 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.

Is St Philomena School a private school?

Yes, St Philomena 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 Philomena School a religious school?

St Philomena School has a Roman Catholic religious affiliation.

School factsNCES Private School Universe Survey (PSS) (SY 2021–22)

Grades
Pre-K – 8th
Enrollment
256
Gender Split
53% M / 47% F
Student-Teacher Ratio
16.4:1
Teachers (FTE)
16
Type
private
Coed Status
coed
Affiliation
Roman Catholic
School Day
6.8 hours
Days Per Year
180 days
Setting
Large Suburb
County
King County
Area population (ZIP 98198)
39,815
Area average commute
30.4 min
Area median age
35.9
About this school's data

Every number on this page comes from a published source with a stated period. Where a source is partial, aging, or describes a surrounding area rather than the school, that limitation is named below.

School directory (enrollment, grades, staff, contact)
NCES Private School Universe Survey (PSS) · SY 2021–22 · Low confidence
  • Vintage not available. Do not use this measure alone.
MySchoolScout rating and rank
MySchoolScout ranking model · Low confidence
  • Vintage not available. Do not use this measure alone.
  • Available for part of the eligible units; results may not represent the full area.
  • Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
Neighborhood (income, housing, education)
U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
  • Older source: ACS 2019–2023 5-year estimates. Use as historical context.
  • Reported for the ZCTA for ZIP 98198; this does not measure the attendance area.

Evidence periods: Rating mixed/unknown input periods; assessments vintage unavailable; directory SY 2021–22

About our data · How we calculate scores

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