Excellent
#172 of 1,851 schools in VA
Top 9% in state
Rocky Run Middle
Middle School · Fairfax County Public Schools · Chantilly, VA
A Fairfax County Public Schools middle school where students score 9 points above what's typical for similar communities.
4400 Stringfellow Rd, Chantilly, VA 20151
- Math 84% vs VA 67% (2025)
- Reading 93% vs VA 74% (2025)
- 13.2:1 student-teacher ratio
Academics
Full Profile · 3/3 metricsView breakdown
View breakdown
View breakdown
Students at Rocky Run Middle score 93% proficient, which is above what's typical for similar communities (expected: 84%).
2025 SOL proficiency
Most recent published year. School vs. VA average.
Trend
→ SteadyProficiency is down 10 points across the 17-year record (2009–2025) and has held near 89% recently.
Show all 14 years
Multi-year averages used by the rating model: math 90% (multi-year average, 2009-2025) · reading/ELA 95% (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 31 test records from VA state assessments and EdFacts (NCES).
Equity & diversity
Shown separately, not included in the overall scoreFree/reduced lunch
20.8%
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 Rocky Run Middle 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 29Car-Dependent
- Transit 26Some Transit
- Bike 33Somewhat Bikeable
Powered by
Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)
Median income
$143,422
Median home value
$647,400
Median rent
$2,245/mo
College educated
57.2%
Homeownership
79.5%
Poverty rate
6.4%
ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 20151; 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 |
|---|---|---|---|---|---|
| Franklin MiddleEnrollment path unverified | 7.5 | 7–8 | 2.3 mi | 824 | Compare → |
| Stone MiddleEnrollment path unverified | 6.5 | 7–8 | 2.7 mi | 708 | Compare → |
| Carson MiddleEnrollment path unverified | 7.3 | 7–8 | 3.7 mi | 1,381 | Compare → |
| King Abdullah AcademyPrivate · tuition | 7.2private | K–12 | 3.9 mi | 739 | Compare → |
Distance is proximity only; it is not attendance eligibility.
Enrollment path unverified: Potential public school; its attendance or application path has not been classified.
Private · tuition: Potential private option; tuition and admission requirements have not been verified.
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
- #34 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
Rocky Run Middle is listed in Fairfax County Public Schools; a district label does not verify attendance for an address.
About Rocky Run Middle
Rocky Run Middle is a public middle school in Chantilly, VA, part of Fairfax County Public Schools, serving approximately 886 students in grades 7th-8th with a 13.2:1 student-teacher ratio. It holds a MySchoolScout rating of 8.5 out of 10 and ranks #172 of 1,851 schools in VA. State assessment records show 90% math proficiency (multi-year average, 2009-2025) and 95% reading/ELA proficiency (multi-year average, 2009-2025).
Frequently asked questions
Common questions about Rocky Run Middle
What grades does Rocky Run Middle serve?
Rocky Run Middle serves students in grades 7th through 8th.
How many students attend Rocky Run Middle?
Rocky Run Middle has an enrollment of approximately 886 students.
What is the student-teacher ratio at Rocky Run Middle?
The student-teacher ratio at Rocky Run Middle is 13.2:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Rocky Run Middle rank in VA?
Rocky Run Middle ranks #172 of 1,851 schools in VA.
What is Rocky Run Middle's MySchoolScout rating?
Rocky Run Middle has a current MySchoolScout rating of 8.5 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 Rocky Run Middle?
Based on loaded state assessment records, Rocky Run Middle has 90% math proficiency (multi-year average, 2009-2025) and 95% reading/ELA proficiency (multi-year average, 2009-2025).
Is Rocky Run Middle a charter school?
No, Rocky Run Middle is not a charter school. It is a traditional public school operated by the local school district.
Is Rocky Run Middle a Title I school?
No, Rocky Run Middle is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Rocky Run Middle?
20.8% of students at Rocky Run Middle 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
- 7th – 8th
- Enrollment
- 886
- Student-Teacher Ratio
- 13.2:1
- Teachers (FTE)
- 67
- Type
- regular
- Setting
- Large Suburb
- County
- Fairfax County
- Chronic Absenteeism (SY 2022-23)
- 11.1%
- Phone
- (703) 802-7700
- Area population (ZIP 20151)
- 22,502
- Area average commute
- 29.2 min
- Area median age
- 40.7
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 20151; 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
Related reading
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