Enrollment
2,937
Virginia · 2024-25 NCES data
High school (grades 9-12) · Chantilly, VA
Chantilly High
Federal NCES profile for Chantilly High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 57/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 510126000059
👥 S:T ratio 35
📚 AP courses 100
🌟 Gifted program 30
🎓 Counselors 63
📋 Attendance 58
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Chantilly High earns 57/100 on the Resource Investment Index, with class sizes larger than 84% of Virginia schools. It is also one of the largest schools in Virginia.
- #6 of 7
- public schools in Chantilly · Resource Index
- 57
- Resource Index · Higher
- 16.2:1
- large classes for Virginia
- 16.8%
- free-lunch eligible
Chantilly High has class sizes larger than 84% of Virginia schools. Computed live against every Virginia school reporting to NCES.
By Resource Investment Index, Chantilly High ranks #6 of 7 public schools in Chantilly, VA.
School address
District: Fairfax County Public Schools · Virginia
NCES ID 510126000059 Verify on NCES CCD record →
Teachers (FTE)
181.0
Federal CCD staff survey
Students per teacher
16.2:1
vs 13.9:1 Virginia avg
+17% vs state
Free-lunch eligible
16.8%
vs 57.6% Virginia avg
-71% vs state
Student-teacher ratio in context
How Chantilly High compares with Virginia and U.S. medians
What stands out at Chantilly High
Chantilly High is a lower-poverty, large high school in Chantilly, Virginia, enrolling 2,937 students.
Class loads run somewhat heavier than typical: 16.2:1 puts it in the larger third of Virginia schools by student-teacher ratio.
Comparatively few students face economic hardship here, 16.8% free-meal eligibility runs 71% below the Virginia average.
By headcount it is one of the larger campuses in Virginia, bigger than 99% of state schools at 2,937 students.
Its Resource Investment Index lands in the lower third of 1,868 scored Virginia schools.
Against 43 statewide peers matched on enrollment and economic need, it ranks mid-pack at #19.
Its student body is led by Asian (39%) and White (34%) (diversity index 70/100).
On the academic-pipeline side it reports 30 Advanced Placement courses.
Counselor coverage is strong, about 184 students per counselor, inside the American School Counselor Association's recommended 250:1.
16.7% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
The surrounding Fairfax County Public Schools spends $17,977 per pupil, 23% above the Virginia average, a better-resourced district than most.
The federal civil-rights collection also records 2 expulsions at this campus for 2021-22.
Among Chantilly's high schools, it stands alongside Westfield High (2,737 students): Chantilly High is larger than that campus by headcount and runs leaner classes (16.2:1 vs 17.1:1).
Fairfax County Public Schools also operates Lake Braddock Secondary (4,411 students) and Robinson Secondary (3,710 students) alongside Chantilly High.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Chantilly High compares
Chantilly High on the metrics families compare, against Virginia and U.S. means.
| Metric | This school | vs Virginia | Virginia avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 16.2:1 | ▲ 17% | 13.9:1 | 15.7:1 |
| Free-lunch eligible | 16.8% | ▼ 71% | 57.6% | 51.7% |
| Enrollment | 2,937 | top 1% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.2:1
Leaner classes than 36% of US schools, a middle-of-the-pack class size.
2,937
Bigger than 99% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
16.8%
free-lunch eligible
- 71% below the Virginia average of 57.6%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
16.2:1
students per teacher
- 17% above state mean
Top 84% in Virginia - lower ratio than 16% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
16.7%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$17,977
per pupil, district-wide
- above Virginia avg of $14,649
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors16.0 FTE
Per 184 students, the combined health-and-guidance staffing load for this school.
Discipline context
89
in-school suspensions + 35 out-of-school
Suspension rate: 3.0 per 100 students. Combined in-school and out-of-school rate: 4.2 per 100 students. Reported via the Civil Rights Data Collection. Includes 2 expulsions.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
Asian 38.6%
White 34.0%
Hispanic or Latino 15.9%
African American 6.0%
Two or More 5.1%
American Indian / Alaska Native 0.3%
Native Hawaiian / Pacific Islander 0.1%
Largest group: Asian at 38.6% of enrollment.
Student-body diversity index 70.4/100
Simpson diversity index - at 70.4, Chantilly High is more mixed than the Virginia school average of 53.7.
Programs
AP courses offered 30
Funding & spending
District-wide per-pupil expenditure for Fairfax County Public Schools, which includes Chantilly High.
$17,977
Per student
+23%
vs Virginia
Avg $14,649
+8%
vs U.S.
Avg $16,593
Revenue mix
Local 66.6%
State 23.3%
Federal 10.1%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Chantilly High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Lake Braddock Secondary | Larger | Similar economic need | Similar S:T ratio |
| Robinson Secondary | Larger | Similar economic need | Similar S:T ratio |
| Hayfield Secondary | Similar size | Similar economic need | Similar S:T ratio |
| West Springfield High | Similar size | Similar economic need | Higher S:T ratio |
| Westfield High | Similar size | Higher economic need | Similar S:T ratio |
Comparisons are relative to Chantilly High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 4,411
- Students per teacher
- 17:1
- Resource Index
- 57/100
- Enrollment
- 3,710
- Students per teacher
- 17.1:1
- Resource Index
- 54/100
- Enrollment
- 3,256
- Students per teacher
- 17.3:1
- Resource Index
- 53/100
- Enrollment
- 2,799
- Students per teacher
- 18.5:1
- Resource Index
- 45/100
- Enrollment
- 2,737
- Students per teacher
- 17.1:1
- Resource Index
- 43/100
Similar high schools in Chantilly
1 comparable high schools (grades 9-12) serving the same city.
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of Virginia, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~2,937 students)
Similar student-teacher ratio (~16.2:1)
Next steps
Verify locally before acting on Chantilly High's federal record.
- Compare Chantilly High against another school. Compare schools
- Fairfax County Public Schools's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Chantilly High
How many students attend Chantilly High?
Chantilly High has 2,937 students enrolled. It is a high school in Chantilly, VA.
What is the student-teacher ratio at Chantilly High?
The student-teacher ratio at Chantilly High is 16.2:1, which is 17% higher than the Virginia average of 13.9:1 and 3% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Chantilly High?
16.8% of students at Chantilly High are eligible for free lunch, compared to the Virginia average of 57.6%.
What is the racial and ethnic makeup of Chantilly High?
The largest demographic group at Chantilly High is Asian at 38.6% of enrollment, in Chantilly, VA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 70.4/100.
What is the Resource Investment Index for Chantilly High?
Chantilly High has a Resource Investment Index of 57/100 (higher reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Chantilly High rank among public schools in Chantilly?
By Resource Investment Index, Chantilly High ranks #6 of 7 public schools in Chantilly, VA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Chantilly on the city page.
Is Chantilly High a good school?
Chantilly High earns 57/100 on the Resource Investment Index, with class sizes larger than 84% of Virginia schools. It is also one of the largest schools in Virginia. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Fairfax County Public Schools?
Besides Chantilly High, Fairfax County Public Schools also operates Lake Braddock Secondary (4,411 students), Robinson Secondary (3,710 students), and Hayfield Secondary (3,256 students). See the Fairfax County Public Schools district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.