Enrollment
1,388
Missouri · 2024-25 NCES data
High school (grades 9-12) · St Louis, MO
Mehlville High School
Federal NCES profile for Mehlville High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 57/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 292067001115
👥 S:T ratio 46
📚 AP courses 85
🌟 Gifted program 70
🎓 Counselors 44
📋 Attendance 40
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mehlville High School earns 57/100 on the Resource Investment Index, with class sizes near the Missouri median. It is also one of the largest schools in Missouri.
- #7 of 26
- high schools in St Louis · Resource Index
- 57
- Resource Index · Higher
- 13.6:1
- students per teacher
- 33.7%
- free-lunch eligible
Mehlville High School has class sizes near the Missouri median. Computed live against every Missouri school reporting to NCES.
By Resource Investment Index, Mehlville High School ranks #7 of 26 high schools in St Louis, MO.
School address
District: Mehlville R-Ix · Missouri
NCES ID 292067001115 Verify on NCES CCD record →
Teachers (FTE)
102.0
Federal CCD staff survey
Students per teacher
13.6:1
vs 12.8:1 Missouri avg
+6% vs state
Free-lunch eligible
33.7%
vs 46.1% Missouri avg
-27% vs state
Student-teacher ratio in context
How Mehlville High School compares with Missouri and U.S. medians
What stands out at Mehlville High School
Mehlville High School is a large high school in St Louis, Missouri, enrolling 1,388 students.
Class loads run somewhat heavier than typical: 13.6:1 puts it in the larger third of Missouri schools by student-teacher ratio.
Its free-meal eligibility rate of 33.7% lands close to the Missouri typical range, neither a high- nor low-need campus by this measure.
By headcount it is one of the larger campuses in Missouri, bigger than 97% of state schools at 1,388 students.
Its Resource Investment Index sits near the middle of the pack among 2,313 scored Missouri schools.
Against 70 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #14.
Its student body is led by White (68%) and African American (12%) (diversity index 51/100).
On the academic-pipeline side it reports 17 Advanced Placement courses.
Counselor coverage runs a bit thin, about 278 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Attendance runs somewhat below the norm, with 24.1% of students chronically absent per the 2021-22 civil-rights collection.
Mehlville R-Ix also operates Oakville Sr. High (1,847 students) and Oakville Middle (629 students) alongside Mehlville High School.
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 Mehlville High School compares
Mehlville High School on the metrics families compare, against Missouri and U.S. means.
| Metric | This school | vs Missouri | Missouri avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 13.6:1 | ▲ 6% | 12.8:1 | 15.7:1 |
| Free-lunch eligible | 33.7% | ▼ 27% | 46.1% | 51.7% |
| Enrollment | 1,388 | top 3% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
13.6:1
Leaner classes than 61% of US schools, a middle-of-the-pack class size.
1,388
Bigger than 95% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
33.7%
free-lunch eligible
- 27% 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
13.6:1
students per teacher
- 6% above state mean
Top 64% in Missouri - lower ratio than 36% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
24.1%
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
$11,295
per pupil, district-wide
- below Missouri avg of $12,931
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors5.0 FTE
Per 278 students, the combined health-and-guidance staffing load for this school.
Discipline context
141
in-school suspensions + 73 out-of-school
Suspension rate: 10.2 per 100 students. Combined in-school and out-of-school rate: 15.4 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
White 68.4%
African American 12.2%
Two or More 6.9%
Asian 6.3%
Hispanic or Latino 5.7%
American Indian / Alaska Native 0.4%
Largest group: White at 68.4% of enrollment.
Student-body diversity index 50.5/100
Simpson diversity index - at 50.5, Mehlville High School is more mixed than the Missouri school average of 31.0.
Programs
AP courses offered 17
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Mehlville R-Ix, which includes Mehlville High School.
$11,295
Per student
-13%
vs Missouri
Avg $12,931
-32%
vs U.S.
Avg $16,593
Revenue mix
Local 74.7%
State 15.9%
Federal 9.4%
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 Mehlville High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Oakville Sr. High | Larger | Lower economic need | Higher S:T ratio |
| Oakville Middle | Smaller | Lower economic need | Similar S:T ratio |
| Bernard Middle | Smaller | Lower economic need | Similar S:T ratio |
| Margaret Buerkle Middle | Smaller | Higher economic need | Similar S:T ratio |
| Bierbaum Elem. | Smaller | Similar economic need | Similar S:T ratio |
Comparisons are relative to Mehlville High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,847
- Students per teacher
- 16.5:1
- Resource Index
- 49/100
- Enrollment
- 629
- Students per teacher
- 14.6:1
- Resource Index
- 50/100
- Enrollment
- 577
- Students per teacher
- 13.1:1
- Resource Index
- 49/100
- Enrollment
- 549
- Students per teacher
- 12.8:1
- Resource Index
- 49/100
- Enrollment
- 531
- Students per teacher
- 12.3:1
- Resource Index
- 51/100
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of Missouri, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~1,388 students)
Similar student-teacher ratio (~13.6:1)
Next steps
Verify locally before acting on Mehlville High School's federal record.
- Compare Mehlville High School against another school. Compare schools
- Mehlville R-Ix'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 Mehlville High School
How many students attend Mehlville High School?
Mehlville High School has 1,388 students enrolled. It is a high school in St Louis, MO.
What is the student-teacher ratio at Mehlville High School?
The student-teacher ratio at Mehlville High School is 13.6:1, which is 6% higher than the Missouri average of 12.8:1 and 13% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Mehlville High School?
33.7% of students at Mehlville High School are eligible for free lunch, compared to the Missouri average of 46.1%.
What is the racial and ethnic makeup of Mehlville High School?
The largest demographic group at Mehlville High School is White at 68.4% of enrollment, in St Louis, MO. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 50.5/100.
What is the Resource Investment Index for Mehlville High School?
Mehlville High School has a Resource Investment Index of 57/100 (higher reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Mehlville High School rank among high schools in St Louis?
By Resource Investment Index, Mehlville High School ranks #7 of 26 high schools in St Louis, MO. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all high schools in St Louis on the city page.
Is Mehlville High School a good school?
Mehlville High School earns 57/100 on the Resource Investment Index, with class sizes near the Missouri median. It is also one of the largest schools in Missouri. 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 Mehlville R-Ix?
Besides Mehlville High School, Mehlville R-Ix also operates Oakville Sr. High (1,847 students), Oakville Middle (629 students), and Bernard Middle (577 students). See the Mehlville R-Ix 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.