Enrollment
401
Missouri · 2024-25 NCES data
2024-25 NCES data Elementary school (grades K-5) NCES 292358002626
Oak Brook Elem. — Ballwin, MO
Federal NCES profile for Oak Brook Elem., including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators — Resource Investment Index 60/100.
👥 Class size 38
🌟 Gifted program 70
🎓 Counselors 60
📋 Attendance 71
How this works: Each indicator above is scored 0–100 from federal NCES and CRDC data, then averaged into the Resource Investment Index. This measures resource allocation — staffing, programs, and support services — not standardized test scores or academic outcomes. Full methodology →
School address
District: Parkway C-2 · Missouri
Public location data per NCES (National Center for Education Statistics) Common Core of Data. Verify the school's current address on the NCES CCD record.
Teachers (FTE)
25.0
Federal CCD staff survey
Students per teacher
15.6:1
vs 12.9:1 Missouri avg
+21% vs state
Free-lunch eligible
7.7%
vs 46.1% Missouri avg
-83% vs state
Student-teacher ratio in context
How Oak Brook Elem. compares with Missouri and U.S. medians
The federal record — no proprietary index, no editorial formula.
PlainSchools publishes the actual federal measurements — enrollment, staffing, demographics, discipline, and finance — straight from the NCES Common Core of Data, CRDC, and F-33 surveys. No composite rating, no opinion-based score on top. You get the same raw numbers researchers and policymakers use, with benchmarks, spending context, and equity indicators computed from the same federal datasets. Full methodology linked below.
What this school's NCES data tells you
Oak Brook Elem. reports 401 enrolled students to the National Center for Education Statistics (NCES) alongside 25.0 full-time-equivalent teachers, producing a 15.6:1 student-teacher ratio. That figure sits 21% above the Missouri state mean of 12.9:1, signalling larger average class loads than peers in the same state. Against the national 2024-25 average of 15.9:1, it is 2% lower, a useful calibration for families comparing districts across state lines.
Title I and federal lunch eligibility offer another window into the student body: 7.7% of pupils qualify for free meals, a proxy for household income that federal programs use to direct funding. The free-lunch share is 83% below the Missouri average and 85% below the national baseline. Counselor coverage works out to roughly 201 students per counselor, meeting the American School Counselor Association recommendation of 250:1. Chronic absenteeism — missing 10% or more of school days — stands at 11.7% according to the 2021-22 Civil Rights Data Collection.
On the finance side, the surrounding Parkway C-2 spends $16,347 per pupil district-wide, above the Missouri average of $15,248 and below the national average of $19,490. Revenue comes 89.1% from local sources (property taxes), 4.2% from the state, and 6.7% from federal programs per the NCES F-33 finance survey. Taken together, these measurements produce a Resource Investment Index of 60/100 (C+), calculated from 4 distinct NCES and CRDC indicators measuring resource allocation rather than academic outcomes.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Oak Brook Elem. compares
Cross-validating school-level NCES values against Missouri state and U.S. national means lets readers see whether this school is an outlier or in line with peers.
| Metric | This school | vs Missouri | Missouri avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 15.6:1 | ▲ 21% | 12.9:1 | 15.9:1 |
| Free-lunch eligible | 7.7% | ▼ 83% | 46.1% | 51.8% |
| Enrollment | 401 | top 65% | — | — |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
What the federal data reveals about equity at this school
Federal measurements — not ratings — surface the resource and opportunity picture. Below are the indicators that researchers, civil-rights monitors, and funding formulas use to assess equity.
Economic need
7.7%
free-lunch eligible
— 83% below the Missouri average of 46.1%
Below the 40% Title I threshold — federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
15.6:1
students per teacher
— 21% above state mean
Top 85% in Missouri — lower ratio than 15% of state schools
Between 15:1 and 20:1 — in line with the typical U.S. public-school staffing range.
Engagement
11.7%
chronically absent (missed 10%+ of school days)
Between 10–20% — above the pre-pandemic baseline of ~15% nationally but within the current U.S. range.
Funding equity
$16,347
per pupil, district-wide
— above Missouri avg of $15,248
Below the U.S. average per-pupil spend — funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors2.0 FTE
Per 201 students — the combined health-and-guidance staffing load for this school.
Discipline context
6
in-school suspensions + 6 out-of-school
Suspension rate: 1.5 per 100 students. Combined in-school and out-of-school rate: 3.0 per 100 students. Reported via the Civil Rights Data Collection.
Overview
Enrollment 401 Top 65% in Missouri — larger than 35% of 2,321 state schools
Teachers (FTE) 25.0
Students per teacher 15.6:1 +21% vs state
Free-lunch eligible 7.7% -83% vs state
NCES ID 292358002626
Student demographics
White 72.6%
Asian 13.2%
Two or More 6.2%
African American 3.7%
Hispanic or Latino 3.5%
American Indian / Alaska Native 0.7%
Largest group: White at 72.6% of enrollment.
Programs & staff
Gifted & talented Yes
Counselors (FTE) 2.0
Students per counselor 201:1
Discipline & special education
Chronically absent 11.7%
In-school suspensions 6
Out-of-school suspensions 6
Funding & spending
District-wide per-pupil expenditure for Parkway C-2, which includes Oak Brook Elem..
$16,347
Per student
+7%
vs Missouri
Avg $15,248
-16%
vs U.S.
Avg $19,490
Revenue mix
Local 89.1%
State 4.2%
Federal 6.7%
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.
Other Schools in This District
- Enrollment
- 1,485
- Students per teacher
- 15.1:1
- Enrollment
- 1,417
- Students per teacher
- 16.3:1
- Enrollment
- 1,281
- Students per teacher
- 15.4:1
- Enrollment
- 990
- Students per teacher
- 13.4:1
- Enrollment
- 881
- Students per teacher
- 13.6:1
Similar elementary schools in Ballwin
6 comparable elementary schools (grades K-5) serving the same city.
Henry Elem.
Standard public school
512 students 15.8:1 students per teacher
Claymont Elem.
Standard public school
460 students 15.9:1 students per teacher
Ballwin Elem.
Standard public school
426 students 14:1 students per teacher
Woerther Elem.
Standard public school
423 students 14.8:1 students per teacher
Wren Hollow Elem.
Standard public school
409 students 15.3:1 students per teacher
Westridge Elem.
Standard public school
397 students 13.8:1 students per teacher
Educator & family resources
In-depth guides on understanding NCES data, school choice, and education funding.
Understanding NCES data
How CCD, CRDC and EDFacts feed every public-school number you see.
Choose a school district
Eight signals that matter more than the overall ranking number.
How schools are funded
Title I, F-33, state aid formulas and what per-pupil spending really means.
Chronic absenteeism
Why missing 10% of school matters and how it varies by district.
Magnet vs charter vs traditional
Three school types, three funding models, three sets of trade-offs.
School discipline data
What CRDC suspension and expulsion records do and don't reveal.
Frequently asked questions about Oak Brook Elem.
How many students attend Oak Brook Elem.?
Oak Brook Elem. has 401 students enrolled. It is a elementary school in BALLWIN, MO.
What is the student-teacher ratio at Oak Brook Elem.?
The student-teacher ratio at Oak Brook Elem. is 15.6:1, which is 21% higher than the Missouri average of 12.9:1 and 2% lower than the national average of 15.9:1.
What percentage of students receive free lunch at Oak Brook Elem.?
7.7% of students at Oak Brook Elem. are eligible for free lunch, compared to the Missouri average of 46.1%.
What is the racial and ethnic makeup of Oak Brook Elem.?
The largest demographic group at Oak Brook Elem. is White at 72.6%. The school serves a diverse student body in BALLWIN, MO.
What is the Resource Investment Index for Oak Brook Elem.?
Oak Brook Elem. has a Resource Investment Index of 60/100 (C+) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. This index measures federal resource allocation — staffing levels, program availability, and support services — not standardized test scores or academic outcomes.