Enrollment
788
Missouri · 2024-25 NCES data
High school (grades 9-12) · Clayton, MO
Clayton High
Federal NCES profile for Clayton High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 63/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 290972000275
👥 S:T ratio 62
📚 AP courses 100
🌟 Gifted program 30
🎓 Counselors 68
📋 Attendance 54
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Clayton High earns 63/100 on the Resource Investment Index, with class sizes smaller than 84% of Missouri schools. It is also more racially and ethnically mixed than most Missouri schools.
- #5 of 6
- public schools in Clayton · Resource Index
- 63
- Resource Index · Higher
- 9.6:1
- small classes for Missouri
- 7.7%
- free-lunch eligible
Clayton High has class sizes smaller than 84% of Missouri schools. Computed live against every Missouri school reporting to NCES.
By Resource Investment Index, Clayton High ranks #5 of 6 public schools in Clayton, MO.
School address
Teachers (FTE)
82.0
Federal CCD staff survey
Students per teacher
9.6:1
vs 12.8:1 Missouri avg
-25% vs state
Free-lunch eligible
7.7%
vs 46.1% Missouri avg
-83% vs state
Student-teacher ratio in context
How Clayton High compares with Missouri and U.S. medians
What stands out at Clayton High
Clayton High is a lower-poverty, large high school in Clayton, Missouri, enrolling 788 students.
Class sizes run a bit leaner than typical: 9.6:1 puts it in the smaller third of Missouri schools by student-teacher ratio.
Comparatively few students face economic hardship here, 7.7% free-meal eligibility runs 83% below the Missouri average.
By headcount it is one of the larger campuses in Missouri, bigger than 92% of state schools at 788 students.
Its Resource Investment Index lands in the upper third of 2,313 scored Missouri schools.
Against 149 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #42.
Its student body is led by White (59%) and African American (15%), more mixed than most schools in the state (diversity index 61/100).
On the academic-pipeline side it reports 25 Advanced Placement courses.
Counselor coverage is strong, about 158 students per counselor, inside the American School Counselor Association's recommended 250:1.
Attendance runs somewhat below the norm, with 18.3% of students chronically absent per the 2021-22 civil-rights collection.
The surrounding Clayton spends $22,162 per pupil, 71% above the Missouri average, a better-resourced district than most.
Clayton also operates Wydown Middle (604 students) and Meramec Elem. (368 students) alongside Clayton High.
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 Clayton High compares
Clayton High on the metrics families compare, against Missouri and U.S. means.
| Metric | This school | vs Missouri | Missouri avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 9.6:1 | ▼ 25% | 12.8:1 | 15.7:1 |
| Free-lunch eligible | 7.7% | ▼ 83% | 46.1% | 51.7% |
| Enrollment | 788 | top 8% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
9.6:1
Leaner classes than 91% of US schools, among the more generously staffed nationally.
788
Bigger than 85% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
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
9.6:1
students per teacher
- 25% below state mean
Top 16% in Missouri - lower ratio than 84% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
18.3%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$22,162
per pupil, district-wide
- above Missouri avg of $12,931
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors5.0 FTE
Per 158 students, the combined health-and-guidance staffing load for this school.
Discipline context
82
in-school suspensions + 24 out-of-school
Suspension rate: 10.4 per 100 students. Combined in-school and out-of-school rate: 13.5 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 58.6%
African American 15.0%
Asian 12.7%
Two or More 9.3%
Hispanic or Latino 4.3%
American Indian / Alaska Native 0.1%
Largest group: White at 58.6% of enrollment.
Student-body diversity index 60.7/100
Simpson diversity index - at 60.7, Clayton High is more mixed than the Missouri school average of 31.0.
Programs
AP courses offered 25
Funding & spending
District-wide per-pupil expenditure for Clayton, which includes Clayton High.
$22,162
Per student
+71%
vs Missouri
Avg $12,931
+34%
vs U.S.
Avg $16,593
Revenue mix
Local 93.6%
State 3.0%
Federal 3.3%
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 Clayton High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Wydown Middle | Similar size | Similar economic need | Similar S:T ratio |
| Meramec Elem. | Smaller | Similar economic need | Higher S:T ratio |
| Glenridge Elem. | Smaller | Similar economic need | Similar S:T ratio |
| Ralph M. Captain Elem. | Smaller | Similar economic need | Similar S:T ratio |
Comparisons are relative to Clayton High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 604
- Students per teacher
- 10.1:1
- Resource Index
- 61/100
- Enrollment
- 368
- Students per teacher
- 11.9:1
- Resource Index
- 59/100
- Enrollment
- 321
- Students per teacher
- 10.7:1
- Resource Index
- 56/100
- Enrollment
- 286
- Students per teacher
- 9.5:1
- Resource Index
- 62/100
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 (~788 students)
Similar student-teacher ratio (~9.6:1)
Next steps
Verify locally before acting on Clayton High's federal record.
- Compare Clayton High against another school. Compare schools
- Clayton'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 Clayton High
How many students attend Clayton High?
Clayton High has 788 students enrolled. It is a high school in Clayton, MO.
What is the student-teacher ratio at Clayton High?
The student-teacher ratio at Clayton High is 9.6:1, which is 25% lower than the Missouri average of 12.8:1 and 39% 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 Clayton High?
7.7% of students at Clayton High are eligible for free lunch, compared to the Missouri average of 46.1%.
What is the racial and ethnic makeup of Clayton High?
The largest demographic group at Clayton High is White at 58.6% of enrollment, in Clayton, MO. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 60.7/100.
What is the Resource Investment Index for Clayton High?
Clayton High has a Resource Investment Index of 63/100 (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 Clayton High rank among public schools in Clayton?
By Resource Investment Index, Clayton High ranks #5 of 6 public schools in Clayton, MO. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Clayton on the city page.
Is Clayton High a good school?
Clayton High earns 63/100 on the Resource Investment Index, with class sizes smaller than 84% of Missouri schools. It is also more racially and ethnically mixed than most Missouri 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 Clayton?
Besides Clayton High, Clayton also operates Wydown Middle (604 students), Meramec Elem. (368 students), and Glenridge Elem. (321 students). See the Clayton 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.