Enrollment
636
Virginia · 2024-25 NCES data
Other / mixed grade configuration · Manassas, VA
C.a. Sinclair Elementary
Federal NCES profile for C.a. Sinclair Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 54/100.
2024-25 NCES dataOther / mixed grade configurationNCES 510313001289
👥 S:T ratio 51
🌟 Gifted program 70
🎓 Counselors 58
📋 Attendance 36
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
C.a. Sinclair Elementary earns 54/100 on the Resource Investment Index, with class sizes smaller than 76% of Virginia schools.
- #4 of 18
- schools in Manassas · Resource Index
- 54
- Resource Index · Higher
- 12.2:1
- small classes for Virginia
- 79.8%
- free-lunch eligible
C.a. Sinclair Elementary has class sizes smaller than 76% of Virginia schools. Computed live against every Virginia school reporting to NCES.
By Resource Investment Index, C.a. Sinclair Elementary ranks #4 of 18 schools in Manassas, VA.
School address
District: Prince William County Public Schools · Virginia
NCES ID 510313001289 Verify on NCES CCD record →
Teachers (FTE)
52.0
Federal CCD staff survey
Students per teacher
12.2:1
vs 13.9:1 Virginia avg
-12% vs state
Free-lunch eligible
79.8%
vs 57.6% Virginia avg
+39% vs state
Student-teacher ratio in context
How C.a. Sinclair Elementary compares with Virginia and U.S. medians
What stands out at C.a. Sinclair Elementary
C.a. Sinclair Elementary is a high-poverty, mid-sized combined-grade school in Manassas, Virginia, enrolling 636 students.
Class sizes run a bit leaner than typical: 12.2:1 puts it in the smaller third of Virginia schools by student-teacher ratio.
Economic need runs somewhat above the state's typical profile, with 79.8% of students eligible for free meals.
With 636 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 417 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 (53%) and Asian (20%) (diversity index 65/100).
Counselor coverage is strong, about 212 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 25.5% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Manassas's public schools, it stands alongside Yorkshire Elementary (851 students): C.a. Sinclair Elementary is smaller than that campus by headcount and runs leaner classes (12.2:1 vs 15.2:1).
Prince William County Public Schools also operates Charles J. Colgan Sr. High (2,956 students) and Woodbridge High (2,898 students) alongside C.a. Sinclair 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 C.a. Sinclair Elementary compares
C.a. Sinclair 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 | 12.2:1 | ▼ 12% | 13.9:1 | 15.7:1 |
| Free-lunch eligible | 79.8% | ▲ 39% | 57.6% | 51.7% |
| Enrollment | 636 | top 38% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.2:1
Leaner classes than 74% of US schools, among the more generously staffed nationally.
636
Bigger than 76% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
79.8%
free-lunch eligible
- 39% 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
12.2:1
students per teacher
- 12% below state mean
Top 24% in Virginia - lower ratio than 76% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
25.5%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
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
Counselors3.0 FTE
Per 212 students, the combined health-and-guidance staffing load for this school.
Discipline context
7
in-school suspensions + 5 out-of-school
Suspension rate: 1.1 per 100 students. Combined in-school and out-of-school rate: 1.9 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 53.3%
Asian 20.0%
African American 13.4%
White 8.3%
Two or More 4.9%
Native Hawaiian / Pacific Islander 0.2%
Largest group: Hispanic or Latino at 53.3% of enrollment.
Student-body diversity index 64.9/100
Simpson diversity index - at 64.9, C.a. Sinclair Elementary is more 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 C.a. Sinclair 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 C.a. Sinclair 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 C.a. Sinclair 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 Manassas
6 comparable other schools (grades Mixed) serving the same city.
Yorkshire Elementary
Standard public school
851 students 15.2:1 students per teacher
Signal Hill Elementary
Standard public school
807 students 17.2:1 students per teacher
Bennett Elementary
Standard public school
746 students 16.2:1 students per teacher
Ashland Elementary
Standard public school
738 students 16.4:1 students per teacher
George P. Mullen Elementary
Standard public school
667 students 13.3:1 students per teacher
Thurgood Marshall Elementary
Standard public school
642 students 17.4:1 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 (~636 students)
Similar student-teacher ratio (~12.2:1)
Next steps
Verify locally before acting on C.a. Sinclair Elementary's federal record.
- Compare C.a. Sinclair 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 C.a. Sinclair Elementary
How many students attend C.a. Sinclair Elementary?
C.a. Sinclair Elementary has 636 students enrolled. It is a public school in Manassas, VA.
What is the student-teacher ratio at C.a. Sinclair Elementary?
The student-teacher ratio at C.a. Sinclair Elementary is 12.2:1, 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 C.a. Sinclair Elementary?
79.8% of students at C.a. Sinclair Elementary are eligible for free lunch, compared to the Virginia average of 57.6%.
What is the racial and ethnic makeup of C.a. Sinclair Elementary?
The largest demographic group at C.a. Sinclair Elementary is Hispanic or Latino at 53.3% of enrollment, in Manassas, VA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 64.9/100.
What is the Resource Investment Index for C.a. Sinclair Elementary?
C.a. Sinclair 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 C.a. Sinclair Elementary rank among schools in Manassas?
By Resource Investment Index, C.a. Sinclair Elementary ranks #4 of 18 schools in Manassas, VA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Manassas on the city page.
Is C.a. Sinclair Elementary a good school?
C.a. Sinclair Elementary earns 54/100 on the Resource Investment Index, with class sizes smaller than 76% 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 C.a. Sinclair 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.