- Enrollment
- 1,485
- Students per teacher
- 14:1
- Resource Index
- 51/100
Elementary school (grades K-5) · Ballwin, MO
Oak Brook Elem.
Federal NCES profile for Oak Brook Elem., including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 59/100.
2024-25 NCES dataElementary school (grades K-5)NCES 292358002626
👥 S:T ratio 36
🌟 Gifted program 70
🎓 Counselors 60
📋 Attendance 71
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Oak Brook Elem. earns 59/100 on the Resource Investment Index, with class sizes larger than 87% of Missouri schools.
- #3 of 9
- elementary schools in Ballwin · Resource Index
- 59
- Resource Index · Higher
- 16:1
- large classes for Missouri
- 7.7%
- free-lunch eligible
Oak Brook Elem. has class sizes larger than 87% of Missouri schools. Computed live against every Missouri school reporting to NCES.
By Resource Investment Index, Oak Brook Elem. ranks #3 of 9 elementary schools in Ballwin, MO.
School address
CCD year-over-year · 2022-23 → 2023-24
-15 students YoY
Oak Brook Elem. held near 375 students from 2022-23 to 2023-24 (-15 headcount).
Teacher FTE lost 25.9 → 25.6 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-15 students YoY 292358002626 · Ballwin, MO Elementary · SMALL · TRAD
401 enr · 16:1 · 7.7% lunch · RII 59
Nearest enrollment peer: South High (1,485 students)
Oak Brook Elem. held near 375 students from 2022-23 to 2023-24 (-15 headcount). Teacher FTE lost 25.9 → 25.6 across the same CCD years. Read with this school → · District book → · Missouri schools → · Find another →
Oak Brook Elem. in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- South High
South High
1,485 students
- West High
West High
1,417 students
- Central High
Central High
1,281 students
- North High
North High
990 students
- Central Middle
Central Middle
881 students
- This school 401
Oak Brook Elem.
401 students
What this shows Oak Brook Elem. reports 401 students on the CCD universe file.
How Oak Brook Elem. compares
Oak Brook Elem. held steady on CCD headcount: ratios and free-lunch share vs Missouri and U.S. means.
| Metric | This school | vs Missouri | Missouri avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 16:1 | ▲ 25% | 12.8:1 | 15.7:1 |
| Free-lunch eligible | 7.7% | ▼ 83% | 46.1% | 51.7% |
| Enrollment | 401 | top 35% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16:1
Leaner classes than 38% of US schools, a middle-of-the-pack class size.
401
Bigger than 48% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
7.7%
free-lunch eligible
- 83% below the Missouri average of 46.1%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
16:1
students per teacher
- 25% above state mean
Top 87% in Missouri - lower ratio than 13% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
11.7%
chronically absent (missed 10%+ of school days)
In the 10-15% range, above the pre-pandemic national baseline but within the broader post-pandemic picture.
Funding equity
$13,983
per pupil, district-wide
- below Missouri avg of $14,087
Well below the U.S. average per-pupil spend, a notably leaner funding position that 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.
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.
Student-body diversity index 44.9/100
Simpson diversity index - at 44.9, Oak Brook Elem. is more mixed than the Missouri school average of 31.0.
Programs
Gifted & talented Yes
District finance for Parkway C-2 reports $13,983 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Oak Brook Elem. Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| South High | Larger | Higher economic need | Lower S:T ratio |
| West High | Larger | Similar economic need | Similar S:T ratio |
| Central High | Larger | Similar economic need | Similar S:T ratio |
| North High | Larger | Higher economic need | Lower S:T ratio |
| Central Middle | Larger | Similar economic need | Lower S:T ratio |
Comparisons are relative to Oak Brook Elem.'s own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,417
- Students per teacher
- 16.1:1
- Resource Index
- 52/100
- Enrollment
- 1,281
- Students per teacher
- 15.8:1
- Resource Index
- 53/100
- Enrollment
- 990
- Students per teacher
- 12.4:1
- Resource Index
- 55/100
- Enrollment
- 881
- Students per teacher
- 13:1
- Resource Index
- 56/100
Nationwide elementary schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~401 students)
Frequently asked questions about Oak Brook Elem.
How many students attend Oak Brook Elem.?
Oak Brook Elem. has 401 students enrolled. It is an elementary school in Ballwin, MO. CCD year-over-year: 390 (2022-23) → 375 (2023-24), nearly flat (-15).
What is the student-teacher ratio at Oak Brook Elem.?
The student-teacher ratio at Oak Brook Elem. is 16:1, which is 25% higher than the Missouri average of 12.8:1 and 2% higher than the national average of 15.7:1.
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% of enrollment, in Ballwin, MO.
What is the Resource Investment Index for Oak Brook Elem.?
Oak Brook Elem. has a Resource Investment Index of 59/100 (higher reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Oak Brook Elem. rank among elementary schools in Ballwin?
By Resource Investment Index, Oak Brook Elem. ranks #3 of 9 elementary schools in Ballwin, MO. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Ballwin on the city page.
What other schools are in Parkway C-2?
Besides Oak Brook Elem., Parkway C-2 also operates South High (1,485 students), West High (1,417 students), and Central High (1,281 students). See the Parkway C-2 district page for the complete list.