Average
#769 of 1,851 schools in VA
Top 42% in state
Union Mill Elementary
Elementary School · Fairfax County Public Schools · Clifton, VA
A Fairfax County Public Schools elementary school serving grades Pre-K – 6th.
13611 Springstone Dr, Clifton, VA 20124
- Math 88% vs VA 70% (2025)
- Reading 80% vs VA 72% (2025)
- 17.1:1 student-teacher ratio
Academics
Full Profile · 3/3 metricsView breakdown
View breakdown
View breakdown
Students at Union Mill Elementary score 84% proficient, which is below what's typical for similar communities (expected: 86%).
2025 SOL proficiency
Most recent published year. School vs. VA average.
Trend
↓ DecliningProficiency has fallen 5 points since 2019, to 84% in 2025, across a 17-year record (2009–2025).
Show all 14 years
Multi-year averages used by the rating model: math 88% (multi-year average, 2009-2025) · reading/ELA 85% (multi-year average, 2009-2025)
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Based on 36 test records from VA state assessments and EdFacts (NCES).
Equity & diversity
Shown separately, not included in the overall scoreFree/reduced lunch
14.4%
Students qualifying for federal meal assistance
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 rateThe neighborhood
Where Union Mill Elementary 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 Washington DC map →
Getting around & local context
- Walk 8Car-Dependent
- Transit 0Minimal Transit
- Bike 22Somewhat Bikeable
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Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)
Median income
$218,942
Median home value
$870,200
Median rent
$2,307/mo
College educated
74.5%
Homeownership
92.8%
Poverty rate
2.8%
ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 20124; this is area context, not an attendance boundary.
Programs & students
Programs & Offerings
Compare nearby
Nearby same-level schools
4 from a 5-mile search; district fallback available
| School | Score | Grades | Distance | Enrollment | Compare |
|---|---|---|---|---|---|
| St Andrew the Apostle SchoolPrivate · tuition | 5.9private | PK–8 | 1.1 mi | 187 | Compare → |
| Centreville ElementaryEnrollment path unverified | 6.4 | PK–6 | 1.2 mi | 773 | Compare → |
| Montessori Children's CenterPrivate · tuition | 6.2private | K | 1.2 mi | 35 | Compare → |
| Centre Ridge ElementaryEnrollment path unverified | 4.8 | PK–6 | 1.5 mi | 658 | Compare → |
Distance is proximity only; it is not attendance eligibility.
Private · tuition: Potential private option; tuition and admission requirements have not been verified.
Enrollment path unverified: Potential public school; its attendance or application path has not been classified.
Public and private scores come from different models and are shown side by side, not blended into one ranking.
Fairfax County Public Schools
- Schools in district
- 223
- Rank in district
- #104 of 199
- District spending per student
- $18,975NCES F-33 · FY 2023 · This annual source is three years behind the current year.
- District child poverty rate
- 6.1%Census SAIPE · 2024
Union Mill Elementary is listed in Fairfax County Public Schools; a district label does not verify attendance for an address.
About Union Mill Elementary
Union Mill Elementary is a public elementary school in Clifton, VA, part of Fairfax County Public Schools, serving approximately 908 students in grades Pre-K-6th with a 17.1:1 student-teacher ratio. It holds a MySchoolScout rating of 6.8 out of 10 and ranks #769 of 1,851 schools in VA. State assessment records show 88% math proficiency (multi-year average, 2009-2025) and 85% reading/ELA proficiency (multi-year average, 2009-2025).
Frequently asked questions
Common questions about Union Mill Elementary
What grades does Union Mill Elementary serve?
Union Mill Elementary serves students in grades Pre-K through 6th.
How many students attend Union Mill Elementary?
Union Mill Elementary has an enrollment of approximately 908 students.
What is the student-teacher ratio at Union Mill Elementary?
The student-teacher ratio at Union Mill Elementary is 17.1:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Union Mill Elementary rank in VA?
Union Mill Elementary ranks #769 of 1,851 schools in VA.
What is Union Mill Elementary's MySchoolScout rating?
Union Mill Elementary has a current MySchoolScout rating of 6.8 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Union Mill Elementary?
Based on loaded state assessment records, Union Mill Elementary has 88% math proficiency (multi-year average, 2009-2025) and 85% reading/ELA proficiency (multi-year average, 2009-2025).
Is Union Mill Elementary a charter school?
No, Union Mill Elementary is not a charter school. It is a traditional public school operated by the local school district.
Is Union Mill Elementary a Title I school?
No, Union Mill Elementary is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Union Mill Elementary?
14.4% of students at Union Mill Elementary qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
School factsNCES Common Core of Data (CCD) (SY 2023–24)
- Grades
- Pre-K – 6th
- Enrollment
- 908
- Student-Teacher Ratio
- 17.1:1
- Teachers (FTE)
- 53
- Type
- regular
- Setting
- Large Suburb
- County
- Fairfax County
- Chronic Absenteeism (SY 2022-23)
- 13.3%
- Phone
- (703) 322-8500
- Area population (ZIP 20124)
- 14,557
- Area average commute
- 33.6 min
- Area median age
- 47.2
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 Common Core of Data (CCD) · SY 2023–24 · Medium confidence
- Source period: SY 2023–24. A newer release may be available.
- MySchoolScout rating and rank
- MySchoolScout ranking model · Low confidence
- Vintage not available. Do not use this measure alone.
- Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
- Math proficiency
- State department of education · 2025 SOL · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: 2025 SOL. A newer release may be available.
- Derived from source records rather than read directly from one field.
- Reading/ELA proficiency
- State department of education · 2025 SOL · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: 2025 SOL. A newer release may be available.
- Derived from source records rather than read directly from one field.
- Student progress (growth)
- NCES EdFacts · Mixed source periods · 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 the fitted year-over-year slope of proficiency from multi-year assessment 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 20124; this does not measure the attendance area.
- Programs (AP/IB, athletics, gifted)
- CRDC via Urban Institute · SY 2021–22 · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: SY 2021–22. A newer release may be available.
Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2009-2025; directory SY 2023–24
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