Enrollment
613
Virginia · 2024-25 NCES data
Other / mixed grade configuration · Woodbridge, VA
R. Dean Kilby Elementary
Federal NCES profile for R. Dean Kilby Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 54/100.
2024-25 NCES dataOther / mixed grade configurationNCES 510313001317
👥 S:T ratio 51
🌟 Gifted program 70
🎓 Counselors 39
📋 Attendance 55
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
R. Dean Kilby Elementary earns 54/100 on the Resource Investment Index, with class sizes smaller than 75% of Virginia schools.
- #12 of 27
- schools in Woodbridge · Resource Index
- 54
- Resource Index · Higher
- 12.3:1
- small classes for Virginia
- 86.0%
- free-lunch eligible
R. Dean Kilby Elementary has class sizes smaller than 75% of Virginia schools. Computed live against every Virginia school reporting to NCES.
By Resource Investment Index, R. Dean Kilby Elementary ranks #12 of 27 schools in Woodbridge, VA.
School address
District: Prince William County Public Schools · Virginia
NCES ID 510313001317 Verify on NCES CCD record →
Teachers (FTE)
50.0
Federal CCD staff survey
Students per teacher
12.3:1
vs 13.9:1 Virginia avg
-12% vs state
Free-lunch eligible
86.0%
vs 57.6% Virginia avg
+49% vs state
Student-teacher ratio in context
How R. Dean Kilby Elementary compares with Virginia and U.S. medians
What stands out at R. Dean Kilby Elementary
R. Dean Kilby Elementary is a high-poverty, mid-sized combined-grade school in Woodbridge, Virginia, enrolling 613 students.
Class sizes run a bit leaner than typical: 12.3:1 puts it in the smaller third of Virginia schools by student-teacher ratio.
Economic need runs somewhat above the state's typical profile, with 86.0% of students eligible for free meals.
With 613 students, its enrollment sits close to the Virginia median campus size.
Its Resource Investment Index lands in the upper third of 1,868 scored Virginia schools.
Against 450 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #70.
Its student body is led by Hispanic or Latino (68%) and African American (18%) (diversity index 50/100).
Counselor coverage runs a bit thin, about 307 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
17.8% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Among Woodbridge's public schools, it stands alongside Kyle R. Wilson Elementary (875 students): R. Dean Kilby Elementary is smaller than that campus by headcount and runs leaner classes (12.3:1 vs 16.8:1).
Prince William County Public Schools also operates Charles J. Colgan Sr. High (2,956 students) and Woodbridge High (2,898 students) alongside R. Dean Kilby Elementary.
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 R. Dean Kilby Elementary compares
R. Dean Kilby Elementary on the metrics families compare, against Virginia and U.S. means.
| Metric | This school | vs Virginia | Virginia avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 12.3:1 | ▼ 12% | 13.9:1 | 15.7:1 |
| Free-lunch eligible | 86.0% | ▲ 49% | 57.6% | 51.7% |
| Enrollment | 613 | top 41% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.3:1
Leaner classes than 73% of US schools, among the more generously staffed nationally.
613
Bigger than 74% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
86.0%
free-lunch eligible
- 49% above the Virginia average of 57.6%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
12.3:1
students per teacher
- 12% below state mean
Top 25% in Virginia - lower ratio than 75% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
17.8%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$13,913
per pupil, district-wide
- below Virginia avg of $14,649
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors2.0 FTE
Per 307 students, the combined health-and-guidance staffing load for this school.
Discipline context
2
in-school suspensions + 2 out-of-school
Suspension rate: 0.3 per 100 students. Combined in-school and out-of-school rate: 0.7 per 100 students. Reported via the Civil Rights Data Collection.
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
Hispanic or Latino 67.5%
African American 17.8%
Asian 8.2%
White 3.3%
Two or More 3.1%
Native Hawaiian / Pacific Islander 0.2%
Largest group: Hispanic or Latino at 67.5% of enrollment.
Student-body diversity index 50.4/100
Simpson diversity index - at 50.4, R. Dean Kilby Elementary is less mixed than the Virginia school average of 53.7.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Prince William County Public Schools, which includes R. Dean Kilby Elementary.
$13,913
Per student
-5%
vs Virginia
Avg $14,649
-16%
vs U.S.
Avg $16,593
Revenue mix
Local 47.2%
State 44.1%
Federal 8.6%
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 R. Dean Kilby Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Charles J. Colgan Sr. High | Larger | Lower economic need | Higher S:T ratio |
| Woodbridge High | Larger | Lower economic need | Higher S:T ratio |
| Osbourn Park High | Larger | Lower economic need | Higher S:T ratio |
| Gainesville High | Larger | Lower economic need | Higher S:T ratio |
| Gar-Field High | Larger | Lower economic need | Higher S:T ratio |
Comparisons are relative to R. Dean Kilby Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,956
- Students per teacher
- 18.5:1
- Resource Index
- 41/100
- Enrollment
- 2,898
- Students per teacher
- 17.5:1
- Resource Index
- 38/100
- Enrollment
- 2,661
- Students per teacher
- 16.6:1
- Resource Index
- 42/100
- Enrollment
- 2,648
- Students per teacher
- 20.9:1
- Resource Index
- 41/100
- Enrollment
- 2,524
- Students per teacher
- 16.7:1
- Resource Index
- 49/100
Similar other schools in Woodbridge
6 comparable other schools (grades Mixed) serving the same city.
Kyle R. Wilson Elementary
Standard public school
875 students 16.8:1 students per teacher
Springwoods Elementary
Standard public school
842 students 17.9:1 students per teacher
Fannie W. Fitzgerald Elementary
Standard public school
829 students 12:1 students per teacher
Leesylvania Elementary
Standard public school
759 students 16.9:1 students per teacher
Antietam Elementary
Standard public school
752 students 16:1 students per teacher
Sonnie Penn Elementary
Standard public school
744 students 17.7:1 students per teacher
Similar other 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 (~613 students)
Next steps
Verify locally before acting on R. Dean Kilby Elementary's federal record.
- Compare R. Dean Kilby Elementary against another school. Compare schools
- Prince William 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 R. Dean Kilby Elementary
How many students attend R. Dean Kilby Elementary?
R. Dean Kilby Elementary has 613 students enrolled. It is a public school in Woodbridge, VA.
What is the student-teacher ratio at R. Dean Kilby Elementary?
The student-teacher ratio at R. Dean Kilby Elementary is 12.3:1, which is 12% lower than the Virginia average of 13.9:1 and 22% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at R. Dean Kilby Elementary?
86.0% of students at R. Dean Kilby Elementary are eligible for free lunch, compared to the Virginia average of 57.6%.
What is the racial and ethnic makeup of R. Dean Kilby Elementary?
The largest demographic group at R. Dean Kilby Elementary is Hispanic or Latino at 67.5% of enrollment, in Woodbridge, VA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 50.4/100.
What is the Resource Investment Index for R. Dean Kilby Elementary?
R. Dean Kilby Elementary has a Resource Investment Index of 54/100 (higher reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does R. Dean Kilby Elementary rank among schools in Woodbridge?
By Resource Investment Index, R. Dean Kilby Elementary ranks #12 of 27 schools in Woodbridge, VA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Woodbridge on the city page.
Is R. Dean Kilby Elementary a good school?
R. Dean Kilby Elementary earns 54/100 on the Resource Investment Index, with class sizes smaller than 75% of Virginia schools. 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 Prince William County Public Schools?
Besides R. Dean Kilby Elementary, Prince William County Public Schools also operates Charles J. Colgan Sr. High (2,956 students), Woodbridge High (2,898 students), and Osbourn Park High (2,661 students). See the Prince William 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.