1
What's the vibe like in the hallways at CHANTILLY HIGH right now?
Community prompt from u/allk12. Replies below.
Enrollment
2,937
High
DISTRICT 2,257 · STATE 1,213
SCHOOL COMMUNITY·FAIRFAX COUNTY PUBLIC SCHOOLS·NCES 510126000059
Chantilly High
4201 Stringfellow Rd, Chantilly, VA 20151 · (703) 222-8100 · Fairfax County
GRADES 09–12HIGH21-SUBURBREGULAR SCHOOL2,937 STUDENTS
Student : Teacher
12.8:1
229 FTE teachers
DISTRICT 14.1:1 · STATE 13.9:1
Free / Reduced Lunch
21%
608 students
DISTRICT 39% · STATE 66%
Community
1
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 635 | 22% |
| Grade 10 | 756 | 26% |
| Grade 11 | 781 | 27% |
| Grade 12 | 765 | 26% |
Student demographics
70%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 74% · STATE 71% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Test scores
SOL 2024-25 . % PassingEnglish Language Arts
95.0%
VA avg 74.2% . +3.0pp since 2022
Math
90.0%
VA avg 72.7% . +6.0pp since 2022
What this means: On the SOL, Virginia's statewide test, about 95 of every 100 students at this school read and write at grade level and about 90 of 100 do math at grade level. Across all Virginia schools, those numbers are about 74 and 73. Reading and writing scores are up about 3 points since 2022, while math scores are up about 6 points.
SOL results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 95.0% | 90.0% |
| 2023-24 | 91.0% | 85.0% |
| 2022-23 | 92.0% | 84.0% |
% Passing, all students and all tested grades.
Source: SOL. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
79.3%
composite math + reading, all grades
Predicted
82.5%
based on VA schools with similar FRL share
Beats by
-3.2pp
below demographic expectation
What this means: About 79% of students here test proficient in math and reading, compared with the roughly 82% typical for Virginia schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Virginia's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Chantilly High
Chantilly High's state test result (79.3% proficient) is higher than 0 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Chantilly High this school | 2,937 | 20.7% | 79.3% |
| Freedom High South Riding | 1,885 | 17.9% | 85.1% |
| Oakton High Vienna | 2,621 | 15.3% | 91.8% |
| Independence High Ashburn | 2,166 | 10.6% | 83.9% |
| Briar Woods High Ashburn | 1,862 | 12.8% | 91.2% |
| Deep Run High Glen Allen | 1,992 | 13.4% | 83.3% |
Matched among Virginia high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Chantilly High ranks
Among high schools| Measure | This school | In Virginia | In Fairfax County |
|---|---|---|---|
| State test proficiency ranked highest first | 79.3% | #100 of 311 | #11 of 24 |
| Math proficiency ranked highest first | 90.0% | #79 of 316 ▲ 50 | #8 of 24 ▲ 2 |
| Reading proficiency ranked highest first | 95.0% | #25 of 316 ▲ 27 | #5 of 24 ▲ 2 |
| Enrollment ranked largest first | 2,937 | #7 of 325 | #4 of 27 |
| Students per teacher ranked fewest first | 12.8:1 | #95 of 309 | #8 of 25 |
| Diversity index ranked most diverse first | 70.4% | #39 of 309 | #10 of 25 |
| Free and reduced lunch ranked highest share first | 20.7% | #287 of 319 | #18 of 26 |
| Enrollment change since 2017-18 ranked fastest growth first | +4.5% | #90 of 131 | #8 of 12 |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
2,937
-10 (0%) vs 2020
+17% since 2000-01, when it was 2,501
Student : Teacher
12.8:1
was 15.7:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 2,937 | 228.9 | 12.8:1 | 21% (608) |
| 2023-24 | 3,006 | 226.2 | 13.3:1 | 25% (751) |
| 2022-23 | 2,937 | 181 | 16.2:1 | 20% (587) |
| 2020-21 | 2,947 | 188 | 15.7:1 | N/A |
| 2017-18 | 2,810 | 172.1 | 16.3:1 | 17% (471) |
| 2015-16 | 2,716 | 171 | 15.9:1 | 15% (413) |
| 2010-11 | 2,655 | 136 | 19.5:1 | 15% (411) |
| 2000-01 | 2,501 | 189 | 13.2:1 | 9% (224) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Chantilly High.
Since 2017-18: students up 5% (2,810 to 2,937); teachers up 33% (172.1 to 228.9).
About Chantilly High
At 4201 Stringfellow Rd in Chantilly, Virginia, Chantilly High operates as a high-enrollment high school. A federal count lists 2,937 students at the school, in grades 9 through 12. Average enrollment for high schools in Virginia is about 1,213, so this school runs 142% bigger than that.
Fairfax County Public Schools has 199 schools and 179,323 students, and Chantilly High is one of those schools.
Asian students are the largest group at Chantilly High, with 39% of enrollment. Next come 34% White, 16% Hispanic, 6% Black, and 5% multiracial. The county population is about 20% Asian. The chance that two students picked at random at Chantilly High belong to different racial or ethnic groups, known as the diversity index, is 70%.
Chantilly High's 228.9 full-time-equivalent teachers put its ratio at 12.8:1. That ratio is under the 13.9:1 average for high schools in Virginia. The school's rate of free or reduced-price lunch eligibility is 21%. Compared with the 37% average for public schools in Fairfax County, the school's rate is lower.
Chantilly High is 3.2 points below its predicted average proficiency rate on state tests (79.3% versus 82.5%), which places it in neither the top nor the bottom 10% in Virginia.
According to the American Community Survey, in Fairfax County, median household income is about $153,637, the share of adults with a bachelor's degree or higher is 65%, and about 4% of people live in poverty. A total of 222 public schools operate in Fairfax County, serving about 174,475 students.
The school nearest to Chantilly High is Greenbriar West Elementary, at a distance of about 0.3 miles. Within five miles of Chantilly High, there are at least 8 other public schools. Compared with its nearest neighbors, Chantilly High ranks 7th of 9 on average proficiency.
NCES assigns Chantilly High the locale Suburb: Large, meaning in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
The school's size has been steady, with 2,947 students in 2020-21 and 2,937 in 2024-25. Its ratio of students to teachers was 15.7:1 in 2020-21, and 12.8:1 in 2024-25.
The allk12 site hosts a discussion page for Chantilly High covering things like school events, clubs, and volunteer needs. Reviews and ratings from people who know the school are welcome.
Fairfax County at a glance
View full county profilePopulation
1,147,837
Census ACS
Median income
$153,637
Household, ACS
Bachelor's+
65%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
222
174,475 students
Quick facts
Related schools
Other schools in Fairfax County Public Schools
- Lake Braddock SecondaryHigh · 4,411 students
- Robinson SecondaryHigh · 3,710 students
- Hayfield SecondaryHigh · 3,256 students
- West Springfield HighHigh · 2,799 students
- Westfield HighHigh · 2,737 students
- West Potomac HighHigh · 2,710 students
Other schools in Chantilly
- Westfield HighHigh · 2,737 students
- J. Michael Lunsford MiddleMiddle · 1,182 students
- Rocky Run MiddleMiddle · 882 students
- Franklin MiddleMiddle · 798 students
- Brookfield ElementaryElementary · 684 students
- Poplar Tree ElementaryElementary · 683 students
Nearby schools
- Greenbriar West Elementary0.3 mi · 630
- Rocky Run Middle0.5 mi · 882
- Brookfield Elementary0.7 mi · 684
- Lees Corner Elementary0.7 mi · 547
- Greenbriar East Elementary0.9 mi · 922
- Poplar Tree Elementary1.3 mi · 683
Frequently asked questions
About Chantilly HighHow many students attend Chantilly High?
Chantilly High enrolls approximately 2,937 students in grades 09-12.
What age range does Chantilly High serve?
Chantilly High serves students from grade 09 through grade 12.
How many students per teacher at Chantilly High?
Approximately 12.8:1 students per teacher at Chantilly High.
What is the student diversity at Chantilly High?
Student demographics at Chantilly High are roughly 34% White, 16% Hispanic, 6% Black, 39% Asian, 5% Two or more.
What district is Chantilly High in?
Chantilly High is part of Fairfax County Public Schools.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.