Enrollment
357
Elementary
DISTRICT 630 · STATE 499
SCHOOL COMMUNITY·FAIRFAX COUNTY PUBLIC SCHOOLS·NCES 510126002058
Armstrong Elementary
11900 Lake Newport Rd, Reston, VA 20194 · (703) 375-4800 · Fairfax County
GRADES PK–06ELEMENTARY13-CITYREGULAR SCHOOL357 STUDENTS
Student : Teacher
10.1:1
35 FTE teachers
DISTRICT 13.6:1 · STATE 13.8:1
Free / Reduced Lunch
19%
69 students
DISTRICT 39% · STATE 66%
Community
0
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Kindergarten | 50 | 14% |
| Grade 1 | 42 | 12% |
| Grade 2 | 55 | 15% |
| Grade 3 | 61 | 17% |
| Grade 4 | 43 | 12% |
| Grade 5 | 43 | 12% |
| Grade 6 | 63 | 18% |
This year's kindergarten class (50) is 21% smaller than its 6th grade class (63).
Student demographics
59%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
77.0%
VA avg 74.2% . +3.0pp since 2022
Math
74.0%
VA avg 72.7% . -2.0pp since 2022
What this means: On the SOL, Virginia's statewide test, about 77 of every 100 students at this school read and write at grade level and about 74 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 down about 2 points.
SOL results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 77.0% | 74.0% |
| 2023-24 | 75.0% | 76.0% |
| 2022-23 | 74.0% | 76.0% |
% 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
73.5%
composite math + reading, all grades
Predicted
82.8%
based on VA schools with similar FRL share
Beats by
-9.3pp
below demographic expectation
What this means: About 74% of students here test proficient in math and reading, compared with the roughly 83% 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 Armstrong Elementary
Armstrong Elementary's state test result (73.5% proficient) is higher than 0 of the 4 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Armstrong Elementary this school | 357 | 19.3% | 73.5% |
| North Landing Elementary Virginia Beach | 463 | 19.0% | 86.4% |
| Forest Elementary Forest | 384 | 18.0% | 87.1% |
| Chancellor Elementary Fredericksburg | 440 | 22.5% | 80.3% |
| Mount Daniel Elementary Falls Church | 486 | 15.6% | N/A |
| Randolph Elementary Crozier | 387 | 26.1% | 85.6% |
Matched among Virginia elementary 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 Armstrong Elementary ranks
Among elementary schools| Measure | This school | In Virginia | In Fairfax County |
|---|---|---|---|
| State test proficiency ranked highest first | 73.5% | #483 of 1,101 | #72 of 136 |
| Math proficiency ranked highest first | 74.0% | #562 of 1,111 ▼ 108 | #81 of 136 ▼ 9 |
| Reading proficiency ranked highest first | 77.0% | #398 of 1,111 ▲ 51 | #70 of 136 ▲ 1 |
| Enrollment ranked largest first | 357 | #901 of 1,176 | #136 of 144 |
| Students per teacher ranked fewest first | 10.1:1 | #28 of 1,105 | #5 of 143 |
| Diversity index ranked most diverse first | 59.5% | #579 of 1,106 | #105 of 143 |
| Free and reduced lunch ranked highest share first | 19.3% | #1,032 of 1,157 | #93 of 140 |
| Enrollment change since 2017-18 ranked steepest decline first | -22.4% | #130 of 759 | #20 of 110 |
Ranked against other public elementary 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
357
-3 (-1%) vs 2020
-47% since 1990-91, when it was 679
Student : Teacher
10.1:1
was 10.3:1
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 | 357 | 35.4 | 10.1:1 | 19% (69) |
| 2023-24 | 365 | 33.2 | 11.0:1 | 19% (69) |
| 2022-23 | 361 | 33.3 | 10.9:1 | 20% (72) |
| 2020-21 | 360 | 35 | 10.3:1 | N/A |
| 2017-18 | 460 | 39 | 11.8:1 | 11% (50) |
| 2015-16 | 455 | 41 | 11.1:1 | 9% (43) |
| 2010-11 | 489 | 23 | 21.3:1 | 9% (42) |
| 2000-01 | 455 | 32 | 14.2:1 | 9% (42) |
| 1990-91 | 679 | 36 | 18.9:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Armstrong Elementary.
Since 2017-18: students down 22% (460 to 357); teachers down 9% (39 to 35.4).
About Armstrong Elementary
Armstrong Elementary is a small elementary school. Its address is in Reston, Virginia. Students in pre-K through 6 attend, and enrollment is 357 students. The typical figure for elementary schools in Virginia is about 499 students.
The 199 schools in Fairfax County Public Schools enroll 179,323 students altogether, Armstrong Elementary among them.
White students are the majority at Armstrong Elementary, with 60% of enrollment. Other groups include 15% Hispanic, 8% Black, 8% multiracial, and 7% Asian. The county population is about 49% White. Pick two students at random and there is a 59% chance they belong to different racial or ethnic groups; that figure is the school's diversity index.
With 35.4 full-time-equivalent teachers in 2024-25, the ratio at Armstrong Elementary was 10.1:1. This ratio sits 3.8 below the 13.8:1 average for elementary schools in Virginia. A measure often used for student poverty, free or reduced-price lunch eligibility, stands at 19%. It compares with 37% for public schools in Fairfax County.
A school with Armstrong Elementary's lunch-eligibility share in Virginia is predicted to score 82.8%. Armstrong Elementary scores 73.5%, 9.3 points below that line.
In the county around the school, Fairfax County, the median household income is $153,637, 65% of adults hold a bachelor's degree or higher, and about 4% of people live in poverty. There are 222 public schools in Fairfax County, enrolling about 174,475 students in all.
Nearby, Herndon High is about 1.0 miles away. There are at least 8 more public schools inside five miles. Armstrong Elementary ranks 3rd of 9 among nearby schools on average proficiency, with 73.5% against a local average of 67.5%.
Armstrong Elementary falls in the City: Small locale category, used for schools inside a principal city with a population under 100,000.
Enrollment has been fairly stable: 360 in 2020-21 and 357 in 2024-25.
Posts about enrollment questions, class placement, and PTA news are welcome on this page. 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
- Chantilly HighHigh · 2,937 students
- West Springfield HighHigh · 2,799 students
- Westfield HighHigh · 2,737 students
Other schools in Reston
- South Lakes HighHigh · 2,434 students
- Hughes MiddleMiddle · 1,012 students
- Dogwood ElementaryElementary · 745 students
- Hunters Woods Elementary School for the Arts and SciencesElementary · 726 students
- Lake Anne ElementaryElementary · 616 students
- Terraset ElementaryElementary · 598 students
Other Armstrong Elementary schools
9 other US public schools in 8 states are named Armstrong Elementary. Armstrong Elementary is the 6th largest of the 10.
- Armstrong ElementaryHampton, VA · 288 students
- Armstrong Elementary SchoolCONROE, TX · 616 students
- Armstrong ElementaryEastover, NC · 456 students
- Armstrong ElementaryGreenville, SC · 435 students
- Armstrong Elementary SchoolDALLAS, TX · 431 students
Nearby schools
- Herndon High1.0 mi · 2,261
- Herndon Elementary1.0 mi · 792
- Aldrin Elementary1.1 mi · 455
- Lake Anne Elementary1.2 mi · 616
- Forest Edge Elementary1.7 mi · 454
- Clearview Elementary1.8 mi · 580
Frequently asked questions
About Armstrong ElementaryHow many students attend Armstrong Elementary?
Armstrong Elementary enrolls approximately 357 students in grades PK-06.
Is Armstrong Elementary an elementary, middle, or high school?
Armstrong Elementary is an elementary school covering grades PK-06.
How many teachers does Armstrong Elementary have?
Armstrong Elementary employs 35 FTE teachers, for a student-to-teacher ratio of 10.1:1.
What is the racial breakdown of students at Armstrong Elementary?
At Armstrong Elementary, the student body is approximately 60% White, 15% Hispanic, 8% Black, 7% Asian, 8% Two or more.
Is Armstrong Elementary public or private?
Armstrong Elementary is a public K-12 school, overseen by Fairfax County Public Schools.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.